Public security authorities are an important part of the government. They are both an administrative arm and a judicial organ since they are in charge of criminal investigations, playing a unique role in cracking down on crimes and maintaining social security.
Criminal police are a major force of the police.
1. Qualification Requirements for Investigative Officers
Article 26 of the People's Police Law provides that investigative officers should meet the following conditions:
Police Constable Level 1 and 2.
The Ministry of Public Security supervises the ranking and promotions of the police.
1. Acceptance and Establishment of Cases
Public security authorities should immediately accept, inquire about, take notes of and hear cases of suspects turned in, reported or brought to the police by citizens or suspects who turn themselves in. Those that meet conditions should be accepted and filed as a case and for complicated and material cases, an investigation plan and, if necessary, necessary measures have to be taken.
2. Procedures for Criminal Investigations
For criminal cases that already been filed with the police, investigations should be launched for a thorough and impartial collection of evidence that may determine whether the suspect is guilty or innocent and, if guilty, whether it is a felon or a misdemeanor. Depending on actual needs, various detective means and measures will be taken in strict compliance with statutory procedures.
3. Procedures for Detentions and Arrests
Public security authorities may proceed to detain criminals caught in the act or material suspects in accordance with statutory procedures; they may also seek approval from procuratorates for an arrest warrant for suspects for whom sufficient evidence of incrimination exists and a sentence is likely, and for whom measures such as obtaining a guarantor in anticipation of trial out of custody and surveillance of residence is insufficient for ensuring social security and order.
4．Procedures for Case Transfer and Prosecution
Cases concluded by public security authorities for which the facts are clearly established, evidence is verified and sufficient, the nature of crime and name of felony correctly defined, legal procedures completed and for which criminal liabilities should be prosecuted, should be transferred to the procuratorate at the same level to determine whether public prosecution is warranted.
5. Procedures for Evidence Gathering
Detectives should strictly follow statutory procedures in collecting all kinds of evidence that can prove whether a suspect is guilty or not, or how serious the felony is. Extortion of confession through torture and collecting evidence through threat, inducement, deception or other illegal means are strictly forbidden.