Criminal detention case flow:
1. If the case-handling personnel of the public security organ think that the criminal suspect should be detained, they should fill in the Detention Report for Letters and Calls, indicate the information of the criminal suspect and the reasons for detention, report it to the person in charge of the public security organ for examination and approval, and issue a detention permit;
2, the public security organs to carry out detention, should hold the "detention certificate" issued by the public security organs at or above the county level, to show the "detention certificate" to the detainee, and announced the detention.
The circumstances of criminal detention include:
1, suspected of committing a crime and possibly evading investigation or trial;
2. Suspected of committing a crime and possibly destroying or falsifying evidence or threatening or bribing witnesses, harassing or retaliating against witnesses, victims, informants, expert witnesses or other relevant personnel;
3 suspected of committing a crime and may continue to commit a crime or endanger public order;
4. Other circumstances that require criminal detention.
The conditions of criminal detention are as follows:
1. Being prepared to commit a crime, committing a crime or being discovered immediately after committing a crime;
2. The victim or a witness on the spot identifies him as a criminal;
3. Found criminal evidence around or at the residence;
4. Attempted suicide, escape or escape after committing a crime.
To sum up, criminal detention is a compulsory measure taken by public security organs to restrict the personal freedom of criminal suspects in the process of reviewing criminal cases according to law, in order to ensure the investigation and prevent the suspects from escaping and destroying evidence. Criminal detention is one of the compulsory measures taken by public security organs against criminal suspects, and it is also the most severe compulsory measure, which usually requires the approval of the court.
Legal basis:
Article 91 of the Criminal Procedure Law of People's Republic of China (PRC)
Time limit for submitting for examination and approval of arrest If the public security organ deems it necessary to arrest a detained person, it shall submit it to the people's procuratorate for examination and approval within three days after detention. Under special circumstances, the approval time can be extended by one to four days.
For major suspects who commit crimes on the run, commit crimes many times or commit crimes in collusion, the time for submitting for examination and approval may be extended to 30 days.