1. In criminal proceedings, the public security agency is the investigative agency, the court is the judicial agency, and the procuratorate is the legal supervision agency (of course it has the right to investigate official crimes).
2. The public security organs have no direct contact with the court, but go through the procuratorate.
3. The general process of a case is that the public security criminal case is filed and reported to the Procuratorate for approval of arrest; after the investigation is completed, it is transferred to the Procuratorate for review and prosecution; after review by the Procuratorate, a public prosecution is filed with the People's Court; the court makes a judgment after trial.
4. People's courts, people's procuratorates and public security organs must strictly abide by the relevant provisions of this law and other laws when conducting criminal proceedings.
5. In criminal proceedings, the people's courts, people's procuratorates and public security organs should divide their work and responsibilities, cooperate with each other, and restrict each other to ensure the accurate and effective implementation of the law.
Extended data:
The functions of the three:
1. The People’s Procuratorate and judicial organs, the Supreme People’s Procuratorate and the Supreme People’s Court are responsible to the National People’s Congress , the Ministry of Public Security is an integral part of the State Council.
2. The People’s Court is the country’s judicial organ and exercises judicial power on behalf of the country. Its mandate is to hear criminal and civil cases. During the trial stage of a criminal case, the people's court has the right to decide whether and what kind of punishment should be applied to the defendant's behavior. During the trial of a civil case, both parties may conduct mediation. If mediation fails, they have the power to issue a judgment or award. After a judgment or ruling comes into effect, if one party fails to perform and the other party applies to the court for enforcement, the people's court may take compulsory measures.
3. The public security organs are the public security organs of the country and are responsible for maintaining public security and social order. In criminal proceedings, it has powers of investigation, detention, preliminary hearing and arrest. For example, questioning criminal suspects, witnesses, and victims; inspecting crime scenes, inspecting and searching criminal suspects, and searching places where criminals and criminal evidence may be hidden; seizing physical evidence and bank cards for identification, and the public security organs can issue arrest warrants and take effective measures , pursue and bring to justice the criminal suspect who should be arrested.
Reference: Public Security Bureau - Baidu Encyclopedia