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The enactment of Indonesia's Law Number 20 of 2025 on the Code of Criminal Procedure (KUHAP 2025), effective January 2, 2026, introduces a paradigmatic shift in the coordination between investigators and public prosecutors: Article 58 mandates active coordination from the investigation stage, fundamentally departing from the sequential-passive model of the former KUHAP, while Article 70 imposes a strict seven-day deadline for indictment drafting after case files are declared complete. This study examines two interconnected questions: (1) how the legal framework governing investigator–prosecutor coordination is structured under KUHAP 2025 and related legislation; and (2) how that framework is implemented in practice at the Purwakarta District Prosecutor's Office. A normative–empirical mixed-method design was employed, integrating statutory, conceptual, and case-study approaches. Data were gathered through in-depth interviews with prosecutors and investigators at Purwakarta District Prosecutor's Office and Purwakarta Police Resort, case document analysis, and field observation. The theoretical framework combines Lawrence M. Friedman's Legal System Theory and Soerjono Soekanto's Law Enforcement Theory. Findings reveal that KUHAP 2025 delivers substantial normative advancement yet harbours three critical regulatory gaps: the absence of binding technical protocols for implementing mandatory active coordination, the lack of uniform and measurable case-file completeness standards, and no formal mechanism for resolving institutional disagreements on legal interpretation. On the ground, coordination at Purwakarta still operates under the old sequential-passive pattern despite the new law: case-file returns (P-19) remain frequent, driven primarily by absent expert testimony, insufficient factual narration in examination records, and mismatches between charged articles and legal facts. A Friedman–Soekanto diagnostic reveals simultaneous dysfunction across all three legal system components substance, structure, and legal culture with the entrenched 'waiting culture' between the police and the prosecution identified as the most resistant obstacle to reform.

Domestic violence (DV) remains a complex legal and social problem, threatening family stability and human dignity. Although Law No. 23 of 2004 concerning the Elimination of Domestic Violence provides strict sanctions, conventional punishment methods are often considered ineffective in restoring damaged social relationships within families. This study examines the implementation of restorative justice in resolving domestic violence cases within the Bungo Police jurisdiction, from the perspective of positive law and Islamic law. This study uses an empirical legal approach and a sociological perspective, with primary data collected through interviews with investigators from the Women and Children Protection Unit (PPA), as well as secondary data from laws, police regulations, and related academic literature. The results show that restorative justice has been applied to several domestic violence cases during the investigation stage through mediation and peace agreements between the parties involved. This method helps reduce the backlog of cases, accelerates dispute resolution, and maintains family social stability. However, challenges remain, such as the possibility of re-victimization due to the imbalance of power between victims and perpetrators. From an Islamic legal perspective, restorative justice is in line with the principles of ta'zīr and maqāṣid al-sharī'ah, especially the preservation of human dignity, life and offspring. By guaranteeing the protection of victims and preventing repeated violence, restorative justice can be an additional mechanism in cases of domestic violence.

The protection of suspects’ rights during the investigation phase is a fundamental component of a fair and effective criminal justice system. This study examines the implementation of the principle of due process of law in Indonesia and its implications for safeguarding human rights in criminal investigations. Utilizing a normative legal research approach, supported by statutory and conceptual analysis, the research evaluates both the legal framework and practical application of suspects’ rights under the Indonesian Criminal Procedure Code (KUHAP), the 1945 Constitution, and international human rights instruments such as the ICCPR. Findings indicate that while Indonesia has established comprehensive regulations to protect suspects, the practical implementation remains inconsistent due to structural, cultural, and procedural challenges. Deviations such as limited access to legal counsel, incomplete documentation of interrogations, and occasional coercive practices undermine adherence to due process standards. The study highlights the critical need for regulatory improvements, capacity building for investigators, and strengthened supervision mechanisms to ensure full protection of suspects’ rights. Enhancing the conformity of investigative practices with due process principles is essential not only for safeguarding individual rights but also for maintaining public trust and the integrity of the Indonesian criminal justice system.

The investigation stage constitutes a crucial phase in the criminal justice system, as it determines the direction and quality of subsequent law enforcement processes. Within the context of Indonesian criminal procedural law, the Criminal Procedure Code (Kitab Undang-Undang Hukum Acara Pidana/KUHAP) grants extensive authority to law enforcement officials, particularly investigators, in order to ensure the effective disclosure of criminal offenses. However, such dominance of authority has the potential to create an imbalance between the interest of law enforcement effectiveness and the protection of human rights, especially when it is not accompanied by adequate mechanisms of limitation and oversight. This study aims to critically analyze the dominance of law enforcement authority at the investigation stage and its implications for law enforcement effectiveness and the potential for abuse of power. The research employs normative legal research using statutory and conceptual approaches, supported by qualitative analysis of legal doctrines, legislation, and relevant academic literature. The findings indicate that while the dominance of investigative authority does contribute to the effectiveness of investigations, it simultaneously creates opportunities for abuse of power due to weak internal and external oversight mechanisms. This condition results in the erosion of the principles of due process of law and the protection of suspects’ rights within the criminal justice system. Therefore, this study emphasizes the need to strengthen judicial control mechanisms, enhance the accountability of law enforcement officials, and reform criminal procedural law in order to achieve a balance between effective law enforcement and the protection of human rights within a democratic rule-of-law state.

The handling of children involved in narcotics crimes requires a restorative approach focused on rehabilitation rather than punishment. This study aims to examine the role of police investigators in applying restorative justice to child offenders in narcotics cases and to identify the obstacles encountered in its implementation. This research employs a normative legal research method with statutory and conceptual approaches. Primary legal materials include Law Number 11 of 2012 on the Juvenile Criminal Justice System, Law Number 35 of 2009 on Narcotics, and Chief of Police Regulation Number 8 of 2021. The findings show that investigators play a strategic role in facilitating diversion, including conducting initial assessments, facilitating diversion deliberations, and coordinating with supporting institutions such as the Correctional Center (Bapas), National Narcotics Agency (BNN), and Social Services. However, implementation remains suboptimal due to internal constraints, including inadequate training and understanding among investigators, limited facilities such as child-friendly rooms and mediation spaces, regulatory disharmony between the Juvenile Criminal Justice System Law and the Narcotics Law, weak inter-agency coordination, and lack of support from families and communities. Post-diversion monitoring is also ineffective. This study concludes that strengthening investigator capacity through specialized training, improving legal frameworks through regulatory harmonization, and enhancing inter-agency collaboration are essential to ensure restorative justice truly serves the best interests of children.

This study examines the critical role of expert opinions from the Ministry of Energy and Mineral Resources (ESDM) during the investigation phase in uncovering gold mining without permit (PETI) crimes under Article 120 of the Indonesian Criminal Procedure Code (KUHAP) in West Kalimantan. The research employs a normative-empirical approach, analyzing legal provisions, government reports, and judicial practices to assess how ESDM experts contribute to establishing the material truth of PETI cases. Findings reveal that expert opinions are indispensable for verifying the absence of permits, assessing environmental damage, and quantifying state losses, thereby strengthening evidentiary frameworks for prosecutors and judges. However, challenges persist, including coordination gaps between law enforcement and ESDM, insufficient technical capacity among investigators, and potential threats to expert independence. The study concludes that optimizing the use of ESDM expertise is not merely procedural but strategic for effective, accountable, and just enforcement against PETI, which remains a significant threat to national resource sovereignty and environmental sustainability.

The reform of criminal investigation procedures has become a crucial aspect of Indonesia’s criminal justice system renewal, particularly following the enactment of the new Criminal Code, which introduces significant shifts regarding the rights of suspects, investigative authority, and the implementation of due process of law. In an era of rapid digital development, investigative practices must also incorporate the principles of good governance and human rights protection to ensure that state authority is exercised proportionally. This study aims to analyze the relevance of the principles of good governance in modern investigative processes, assess the adequacy of due process guarantees under the current Code of Criminal Procedureand the new Criminal Code, and identify practical challenges in application. Using a normative legal research method through statutory, conceptual, and comparative approaches, the study finds that criminal investigations in Indonesia continue to face issues such as normative inconsistency, regulatory disharmony, and weak accountability mechanisms. The integration of the principles of good governance has the potential to strengthen the quality and fairness of investigations, yet requires clearer normative foundations and consistent implementation. Moreover, the new Criminal Code does not fully resolve harmonization issues with Code of Criminal Procedure, making procedural reform an urgent necessity. The findings contribute to the enhancement of suspect protection, professionalism among investigators, and the overall improvement of Indonesia’s criminal justice system.

The enforcement of ethical codes within the civil service is a fundamental pillar for maintaining public trust and bureaucratic integrity. However, the implementation of disciplinary sanctions for Civil Servants (Aparatur Sipil Negara or ASN) in Indonesia currently faces significant challenges regarding fairness and consistency. (Problem) The core issue lies in the broad administrative discretion possessed by investigators (Tim Pemeriksa) under Government Regulation No. 94 of 2021, which often leads to subjective, legalistic, and disproportionate sanctioning without considering substantive justice. This study aims to analyze the weaknesses of the current sanction implementation mechanism and proposes a reconstruction of the investigators' authority based on the value of justice (Nilai Keadilan). Using a normative juridical approach and conceptual analysis, this research examines current regulations and compares them with the principles of Dignified Justice. The study finds that the current positivistic approach tends to ignore the human aspect and restorative potential of the sanctions. Consequently, a reconstructed model is proposed where investigators must integrate ethical deliberation and justice values into their examination process, ensuring sanctions are not merely punitive but also corrective and fair.

The rapid development of technology encourages the change in crime patterns from conventional to digital through the use of electronic devices. This phenomenon makes many individuals and groups use technology not only for positive purposes, but also to gain financial gain illegally. Instagram as one of the most popular social media applications has also become a space for digital crime practices, especially through the creation of fake accounts. Fake accounts are used for various harmful acts such as online fraud, the spread of fake news, the use of identities or photos without permission, acts of bullying and negative comments that trigger conflicts, to the spread of pornographic content. This research aims to identify the forms of fake account practices on Instagram, analyze the causative factors, and evaluate the application of applicable laws, especially Law Number 19 of 2016 concerning Information and Electronic Transactions. The research method used is empirical legal research with a qualitative approach. The data was collected through interviews with investigators from the Directorate of Criminal Investigation of the Metro Jaya Police, academics, and civil society organizations (CSO). The results of the study show that the practice of fake accounts still often occurs due to low digital literacy, weak supervision from platforms, and not optimal law enforcement. Although Article 35 jo Article 51 paragraph (1) of the ITE Law has regulated the prohibition of data and identity manipulation, its implementation still faces a number of obstacles from aspects of legal substance, enforcement structure, and community legal culture. This study recommends the need for collaboration between the government and social media platforms in limiting the creation of fake accounts, improving people's digital literacy, and reformulating legal rules that are clearer and more adaptive to the dynamics of digital crime. These efforts are needed so that the protection of social media users is optimal and able to create a safe digital space.

The performance of investigators in resolving criminal cases is one of the key indicators of police effectiveness. However, the Semendawai Suku III Police Sector still faces challenges in monitoring case resolution due to the lack of an integrated reporting system and minimal documentation of investigators’ knowledge. This study aims to develop an interactive dashboard system based on Knowledge Management to assist in monitoring case resolution performance and support data- and knowledge-based decision-making processes. The research employs the Prototype method, involving several stages: needs analysis, system design, system development, testing, and refinement. The system was developed using the PHP programming language and MySQL database. The implementation results show that the dashboard can display data on criminal reports, case resolutions, and pending cases in an informative and integrated manner. In addition, the knowledge base feature functions as a medium for storing and sharing investigators’ experiences (lesson learned), allowing field knowledge to be reused by other officers when handling similar cases. Overall, the implementation of the interactive dashboard system based on Knowledge Management at the Semendawai Suku III Police Sector successfully improves work efficiency, strengthens the transparency of investigative performance, and builds a foundation for sustainable organizational learning within the police environment.

White-collar crime has evolved to a transnational scale, transcending national boundaries. The crimes are increasingly sophisticated and well-organized, making them difficult to detect and eradicate effectively. Criminals continually seek to secure their proceeds through various means, including complex schemes of money laundering involving international financial networks. To enforce the law on money laundering, proof of the occurrence of money laundering is necessary. Therefore, prior to carrying out the investigation, several key elements must be understood, including the basic concepts of money laundering, the methods of money laundering, and indirect methods of evidence. The crime of money laundering is based on Law No. 15 of 2002 and has been carried out in accordance with the applicable provisions, namely Law No. 8 of 1981 concerning the Criminal Procedure Code (KUHAP), and the Procedural Law contained in Law No. 15 of 2002 concerning the Crime of Money Laundering as amended by Law No. 25 of 2003 concerning Amendments to Law No. 15 of 2002 concerning the Crime of Money Laundering. Obstacles that arise in investigating money laundering crimes can be categorized into two categories: legal and non-legal. Legal obstacles include provisions on bank secrecy, investigators' obligations to protect reporters and witnesses, investigators' incomplete perceptions of money laundering, and incomplete information from the Financial Transaction Reports and Analysis Center (PPATK). Non-legal obstacles include reporters not necessarily being victims, limited human resource capacity of investigators, lack of adequate facilities, minimal public awareness, insufficient institutional coordination, and technological gaps that hinder optimal enforcement efforts.

This study examines the role of discretion exercised by law enforcement officers, especially within the context of criminal investigations. Discretion refers to the authority granted to investigators, prosecutors, and judges to make decisions that are not always explicitly regulated by written laws or regulations. It is granted to allow flexibility in addressing situations that require quick, context-specific decisions. Discretion is necessary because not every legal situation can be anticipated in advance by the law, especially in dynamic and unpredictable situations that law enforcement professionals encounter daily. However, the exercise of discretion must be grounded in the core principles of justice, legal certainty, and respect for human rights, ensuring that decisions are made fairly and in accordance with legal norms. While discretion allows law enforcement officers to exercise judgment and adapt to diverse situations, it also carries significant risks, particularly the potential for abuse of power. Such abuse could manifest in inappropriate criminalization of innocent individuals, discriminatory practices, or biased decisions that undermine the legitimacy of the justice system. The possibility of such negative consequences necessitates a careful and responsible approach to the application of discretion. Law enforcement officers must not only act in accordance with the law but also adhere to ethical standards and ensure that their decisions are made transparently and equitably. Therefore, the study emphasizes the need for strict oversight and the development of clear, consistent guidelines to govern the exercise of discretion. Supervision mechanisms, such as internal audits and external oversight bodies, are crucial in monitoring law enforcement activities and ensuring that officers do not misuse their powers. Furthermore, providing adequate training to law enforcement personnel on the ethical and legal boundaries of discretion is vital in preventing arbitrary or unjust decisions.

Law Number 11 of 2012 concerning the Juvenile Criminal Justice System shifts the paradigm of child handling from a retributive approach to a restorative one through a diversion mechanism. This study aims to analyze the effectiveness of the application of restorative justice in handling cases of child abuse in the jurisdiction of the Binjai Police. The method used is empirical juridical with a socio-legal research approach, including document studies, observations, and interviews with child perpetrators, victims, and investigators. Of the 36 cases of child abuse, 25 cases (69.4%) were resolved through diversion and 11 cases (30.6%) through the formal justice process. The research findings indicate that the application of restorative justice is effective in reducing the criminalization and stigmatization of children and is in line with the principle of the best interests of the child as specified in the SPPA Law. However, optimization of implementation needs to be done through strengthening human resources, improving coordination between stakeholders, and developing a periodic evaluation system. This research contributes to the development of a more humane and sustainable juvenile criminal justice policy.

The special autonomy granted to Aceh Province allows for the implementation of Islamic criminal law (jinayat), yet challenges remain in law enforcement, particularly against corporations that provide facilities for Jarimah. Despite the enactment of Qanun Number 6 of 2014 on Hukum Jinayat, prosecutions have largely focused on individuals, while companies such as hotels, boarding houses, and cafés frequently escape accountability, even when their facilities are used to commit acts such as khalwat, maisir, and zina. This study aims to examine the enforcement mechanisms targeting such corporate entities within the jurisdiction of Banda Aceh City. Employing empirical legal research methods, the study utilizes qualitative analysis based on field observations, interviews with stakeholders, and a review of legal documents. The findings indicate that law enforcement efforts are hampered by five major factors: vague and incomplete legal provisions; limited knowledge and training among investigators; inadequate human resources and supporting infrastructure; a lack of public support; and deeply rooted cultural practices that often favor informal resolutions over formal prosecution. Despite the legal possibility of corporate liability under the qanun, enforcement remains weak due to unclear definitions, particularly concerning intent and the element of facilitation. The study concludes that the effectiveness of law enforcement in this domain is critically undermined by structural and normative deficiencies. Therefore, reform is urgently needed, including amendments to legal texts, comprehensive investigator training, and public engagement strategies to ensure corporate accountability in supporting the implementation of syari’at Islam in Aceh.

Every teenager should ideally be able to grow and develop well according to their age and as the next generation of the nation, but in reality there are teenagers who commit crimes, one of which is online gambling. Online gambling crimes among teenagers have an impact on other crimes, such as theft, so they must be dealt with optimally. The problem of this research is regarding the criminological analysis of online gambling crimes among teenagers in North Lampung and how the efforts made by the North Lampung Police in dealing with online gambling crimes among teenagers. This research uses a normative and empirical legal approach. The data collection procedure is carried out by means of literature studies and field studies. which are then analyzed qualitatively to obtain conclusions. The results of the research and discussion show that the criminological analysis of online gambling crimes among teenagers in North Lampung in accordance with the Differential Association Theory shows that the cause of teenagers committing online gambling crimes is the interaction, relationship, and communication between teenagers who have never gambled online with other teenagers who have gambled online. In accordance with the Strain Theory, the cause of teenagers committing online gambling crimes is the demands of daily needs. According to Social Control Theory, the cause of teenagers committing online gambling crimes is the lack of supervision from various related parties such as family, schools/educational institutions and law enforcement officers. Efforts to overcome online gambling crimes in teenagers through non-penal means are carried out by socializing child protection and cooperating/coordinating with schools. Penal means are carried out through the process of investigating children who commit online gambling crimes by child investigators based on the Juvenile Justice System Law.    

Proof in criminal procedural law in Indonesia is a process that starts from the investigation stage, where evidence is gathered by investigators, to the trial stage, where the judge delivers a verdict. The main goal of this process is to seek and uphold material truth, which is the truth that corresponds to the actual facts. This evidence includes various forms such as witness testimony, expert testimony, documents, indications, and the defendant's statements. In the Indonesian proof system, which is based on the Continental European system, at least two valid pieces of evidence and the judge's conviction are required to declare someone guilty. This means that the evidence must be convincing to the judge regarding the truth of the charges brought against the defendant. This article examines the theory of proof, circumstantial evidence, and challenges in the practice of proof, including the testimony of possession that emerged in the Vina Cirebon case. This research employs a normative juridical method with a legislative approach. The analysis shows that proof in criminal procedural law heavily relies on valid evidence and the judge's conviction, and identifies that the Indonesian judicial system needs to pay attention to the development and adaptation to special situations such as possession testimony.

The rise of trade in protected wildlife threatens the preservation of biodiversity in Indonesia, especially in the Aceh and North Sumatra regions. This is because punishment does not provide a deterrent effect to the perpetrators and the involvement of officials in its implementation, so that law enforcement against the trade in protected wildlife has not been felt effective in the eyes of the public. In this thesis, the author wants to know the extent of the effectiveness of law enforcement carried out by Forestry Civil Servant Investigators (PPNS) against protected wildlife trade through issues related to law enforcement, obstacles in law enforcement and efforts that have been made to overcome these obstacles. This research was conducted in Section I of the Sumatra Regional Environmental and Forestry Law Enforcement Center. The research method used is a case study with a qualitative approach. Data was collected through interviews with PPNS Forestry and related parties, as well as analysis of documents related to protected wildlife trafficking cases. The results of the study show that the effectiveness of law enforcement by PPNS Forestry has been quite effective, although it is still faced with several obstacles in its implementation. Law enforcement against the trade in protected wildlife starts from preemptive, preventive, repressive and judicial actions. Light punishment, the use of undercover buy techniques, proof of evidence, involvement of officials, facilities and infrastructure, human resources and public awareness are still factors that hinder law enforcement. Therefore, efforts have been made to overcome these obstacles by revising the law, strengthening intelligence networks, adding and increasing human resources, coordinating with related agencies and socializing to the community. The author recommends that socialization be carried out to law enforcement officials regarding the equality of perception in the implementation of Law Number 32 of 2024 and establish close cooperation with the TNI and Polri intelligence networks and make strict rules against officers involved in the trade of protected wildlife.

Examination of a criminal case in a judicial process essentially aims to find the material truth, namely the complete truth of a criminal case by applying the provisions of criminal procedural law honestly and in a timely manner with the aim of finding out who the perpetrator is who can be charged with committing something. violation of law. Making a post mortem et repertum gives the full duty to the doctor as an implementer in the field to assist the prosecutor in determining the direction of the charges that will be brought against the defendant, as well as assisting the judge in finding the material truth in deciding the criminal case. This research includes normative legal research, so the legal materials used are primary, secondary and tertiary legal materials. The technique for collecting legal materials that will be used as a source in this research is library research, namely collecting legal materials by reading statutory regulations, official documents, journals, articles from the internet, and other literature that is closely related to The issues discussed are based on secondary legal materials. The presence of the Pretrial Institution provides a warning that law enforcers must be careful in carrying out their legal actions and every legal action must be based on applicable legal provisions, meaning that they must be able to exercise restraint and distance themselves from arbitrary actions. Thus, it is clear that organizing pretrial proceedings is not an easy task considering that the activities of one law enforcement agency to assess and test the work patterns of other law enforcement agencies is definitely work that must be carried out carefully and mastering all law enforcement mechanisms. The judiciary in Indonesia, one of whose tasks is to examine laws against the constitution, is what we often call judicial review. This judicial review is carried out to protect the rights of citizens who feel disadvantaged by the enactment of a law. In this case, what concerns the author is the judicial review of article 77 of the Criminal Procedure Code, which in this article is felt to be detrimental to someone who is designated as a suspect by investigators, because the article does not regulate the determination of suspects as pre-trial objects.

The examination of a criminal case in a judicial process essentially aims to seek material truth, namely the complete truth of a criminal case by applying the provisions of criminal procedure law in an honest and timely manner with the aim of finding out who is the criminal who can be charged with committing an offense. The making of visum et repertum gives full duty to the doctor as the executor in the field to assist the prosecutor in determining the direction of the indictment that will be charged against the defendant, as well as assisting the judge in finding material truth in deciding a criminal case. The approach used in the research is a normative juridical approach. The juridical-normative approach The data source of a research is primary data and secondary data. Because this research is normative legal research, the sources studied are secondary data sources. Qualitative analysis is carried out by describing quality data in the form of sentences that are regular, sequential, logical, not overlapping, and effective. The role of Visum et Repertum in assisting the examination process of a case is not only useful for investigators to uncover the criminal offense, but also useful for examination in the trial of the case. Visum et Repertum as stated in Article 184 paragraph (1) KUHAP point c is a valid evidence. This makes the Visum et Repertum legally binding in assisting the resolution of a case. Visum et Repertum in the investigation process of a criminal act of rape aims to support investigators in tracking and collecting evidence in addition to other evidence such as victim testimony, suspect testimony, witness testimony and examination of other evidence. It is necessary for investigators to have additional knowledge about medical terms in a Visum et Repertum. This knowledge is useful so that investigators do not misinterpret the results of the Visum et Repertum obtained so that it can influence and determine the actions taken by investigators in solving a case.  

This study aims to analyze the investigation of narcotics crimes conducted by the Mojokerto City Police in accordance with the provisions of Article 114 in conjunction with Article 112 of Law Number 35 of 2009 concerning Narcotics. These articles regulate the threat of criminal penalties for drug dealers and users, and provide a legal basis for law enforcement officers in carrying out the investigation process. This study uses a normative legal method with a statutory approach and case analysis. The results of the study indicate that the investigation at the Mojokerto City Police has attempted to comply with applicable legal provisions, but there are obstacles such as a lack of competent human resources, obstacles in collecting evidence, and challenges in implementing rehabilitation for drug users. This study recommends increasing the capacity of investigators through training, optimizing cooperation with related agencies, and implementing more transparent and accountable investigation procedures.