When the case-handling personnel of the public security organ think it is necessary to detain the criminal suspect, they shall fill in the Report on Requesting Detention, specify the situation 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; When a criminal suspect is detained by a procuratorial organ, the opinions of the case-handling personnel are put forward, reviewed by the department head, decided by the procurator-general, and then delivered to the public security organ for execution. When the public security organ carries out detention, it shall hold the detention certificate issued by the public security organ at or above the county level, show the detention certificate to the detainee and announce the detention. Ordering the detained person to sign or seal the detention certificate. If the detainee refuses to sign or seal, it shall be indicated. When necessary, the detainee may use police equipment and weapons according to law.
Legal basis: Article 85 of the Criminal Procedure Law of People's Republic of China (PRC).
Detention procedure When a public security organ detains a person, it must produce a detention permit.
After detention, the detained person shall be immediately sent to the detention center for custody, and shall not exceed twenty-four hours. Unless it is impossible to notify or the notification of suspected crimes endangering national security or terrorist activities may hinder the investigation, the family members of the detained person shall be notified within 24 hours after detention. After the circumstances that hinder the investigation disappear, the family members of the detained person shall be notified immediately.