Article 24, paragraph (2) of Law Number 20 of 2025 regarding the Code of Criminal Procedure (KUHAP) delineates the grounds for the cessation of an inquiry by the Indonesian National Police. The termination of the investigation is conducted through a case conference and the Restorative Justice Mechanism (RJM). The conclusion of the investigation through a case presentation no longer necessitates a court ruling unless a pretrial motion is submitted by the party involved in the criminal case. Legal complications emerge when the findings of an investigator's case presentation are not filed for a pretrial motion by the pertinent party, resulting in ambiguity regarding the validity of the investigation's termination in the absence of a judicial ruling. This study utilises a normative legal methodology, incorporating a statutory approach and a case-based approach. This research utilises both secondary and primary data sources. This research seeks to elucidate the termination of investigations from the standpoint of legal certainty. The research findings indicate that the legal ramifications resulting from the cessation of the investigation within the criminal justice system culminate in a pretrial. The termination of the investigation possesses legal certainty if conducted in compliance with legislative provisions.