The public security organ may detain an active criminal or a major suspect in any of the following circumstances:
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;
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.
Criminal detention refers to temporary compulsory measures taken by public security organs or people's procuratorates against active criminals or major suspects in the investigation of criminal cases. The public security organ shall interrogate the detained person within 24 hours after detention.
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 it to the detainee and announce the detention. Then order the detained person to sign, seal or restrain the fingerprint on the detention certificate. If the detainee refuses to sign, seal or fingerprint, the executor shall indicate it on the detention certificate.
Article 82 of the Criminal Procedure Law of People's Republic of China (PRC) * * * A flagrante delicto or a major suspect under any of the following circumstances may be detained by the public security organ in advance:
(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) criminal evidence is found around him or at his residence;
(four) attempted suicide, escape or escape after committing a crime;
(5) It is possible to destroy or forge evidence or collude with others;
(six) do not speak the real name and address, the identity is unknown;
(7) Being seriously suspected of committing crimes on the run, committing crimes for many times or committing crimes in association.
Article 83 When a public security organ carries out detention or arrest in a different place, it shall notify the public security organ in the place where the detained or arrested person is located, and the public security organ in the place where the detained or arrested person is located shall cooperate.
Article 84 In any of the following circumstances, any citizen may immediately hand it over to a public security organ, a people's procuratorate or a people's court for handling:
(1) A crime is being committed or is discovered immediately after the crime;
(2) Being wanted;
(3) Escaping from prison;
(4) being pursued.