Detention in criminal proceedings is a compulsory method to temporarily deprive criminals or major suspects of their personal freedom when they encounter legal emergencies during investigation. It should be noted that criminal detention is a compulsory measure, not a criminal punishment.
According to the regulations, the following criminal detention measures can be taken:
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;
5. It is possible to destroy, forge evidence or collude with others;
6, do not speak the real name, address, unknown;
7. Suspected of committing crimes on the run, committing crimes many times, and committing crimes in partnership.
Legal basis:
Criminal procedure law
Article 91
If the public security organ deems it necessary to arrest the 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. The people's procuratorate shall, within seven days after receiving the approval letter from the public security organ, make a decision on whether to approve or disapprove the arrest. If the people's procuratorate does not approve the arrest, the public security organ shall immediately release it after receiving the notice and promptly notify the people's procuratorate to execute it. Those who need to continue the investigation and meet the conditions of obtaining a guarantor pending trial or residential surveillance shall be granted a guarantor pending trial or residential surveillance according to law.