Detention center:
1. The detention center is the organ that detains criminal suspects who have been arrested and criminally detained according to law. If the remaining sentence of a criminal sentenced to fixed-term imprisonment is less than three months before delivery for execution, the detention center shall execute it on his behalf.
2. The detention of a criminal suspect in a detention center shall be based on the arrest warrant and criminal detention certificate issued by a public security organ or a state security organ at or above the county level held by the detention institution, or the certification documents issued by a public security organ, a state security organ, a prison, a reform-through-labour institution, a people's court or a people's procuratorate at or above the county level to pursue and escort the criminal suspect for temporary execution outside prison. If there is no such certificate, or the record of the certificate is inconsistent with the actual situation, it will not be taken into custody.
Baidu Encyclopedia-Measures for the Implementation of the Regulations of People's Republic of China (PRC) Detention Center