Criminal police (hereinafter referred to as criminal police), do criminal investigation, analyze and study criminal cases; Organize and coordinate the detection of general, major and extraordinarily serious criminal cases; To undertake the extraction, inspection and appraisal of case traces and material evidence. To undertake anti-drug, anti-gang and anti-terrorism work within its jurisdiction; To undertake the investigation and prevention of economic crimes within its jurisdiction (some places have special economic investigation departments); To undertake liaison and contact with foreign-related criminal cases and foreign-related police affairs. In a narrow sense, "criminal police" refers to the police of the criminal police team. Broadly speaking, it also includes economic investigation team, drug squad and so on. The main task is to investigate criminal cases. I hear about theft, murder, fraud and other criminal cases every day.
In People's Republic of China (PRC), at present, the national criminal police belong to four levels of public security organs: the Ministry of Public Security of the People's Republic of China, the provincial (autonomous region) public security bureau, the prefecture-level city (autonomous prefecture) public security bureau (regional public security bureau) and the county (county-level city, flag) public security bureau (municipal district public security bureau). The Ministry of Public Security has a criminal investigation bureau; The provincial public security department (bureau) has a criminal investigation (police) corps; The municipal public security bureau (department) has a criminal investigation (police) detachment; County-level public security bureaus (sub-bureaus) have criminal investigation (police) brigades. In addition, there is also a first-level organization, that is, the Criminal Investigation Brigade, which sends a number of criminal police teams in the responsible areas to the jurisdiction. The criminal police teams in the responsible areas are the most basic combat units of public security organs.
Criminal investigation is an important part of public security work, and the criminal investigation department is a full-time department to crack down on criminal offences. According to the Criminal Procedure Law, criminal investigation is the primary link of criminal proceedings, and the stages of investigation, prosecution and trial are juxtaposed, which is an independent litigation stage. The main evidence for prosecuting criminal suspects in criminal proceedings comes from investigation. The power of investigation, procuratorial power and judicial power shall be exercised by public security, procuratorial and court organs within the scope prescribed by law, and shall not exceed their duties or substitute for each other.
According to relevant laws, criminal investigators are responsible for finding out the category and nature of cases, deciding when to enter criminal proceedings, collecting evidence materials, arresting or controlling criminal suspects, recovering stolen money and goods, protecting innocent people from criminal investigation, ensuring the safety of witnesses and victims, and deciding whether to transfer cases to procuratorial organs to prevent crimes. Specifically, there are: the right to file a case, the right to investigate and inquire, the right to apply for criminal identification, the right to criminal identification, the right to execute criminal compulsory measures, the right to interrogate criminal suspects, the right to conduct on-site inspection, the right to execute seized goods, the right to execute wanted orders, the right to organize identification, the right to execute technical reconnaissance, the right to decide to transfer cases, the right to suspend investigation activities, the right to revoke case suggestions, the right to legally use police weapons, and the right to investigate experiments.
The criminal investigation department at a higher level is responsible for guiding, guiding and coordinating the business work of the criminal investigation department at a lower level. The Criminal Investigation Bureau of the Ministry of Public Security has jurisdiction over 1 14 criminal cases that endanger public security, infringe citizens' personal rights and infringe citizens' property rights. Its main duties are: to master the crime trends, collect, inform and exchange crime information, and study and formulate prevention and crackdown countermeasures; Organizing, guiding and supervising local public security organs to investigate and handle criminal cases; To undertake cases assigned by superiors; Formulate the development plan of criminal technology and criminal investigation information work, organize the popularization and application of criminal technology and criminal investigation information technology, and provide technical and information support for major and difficult criminal cases.