The conditions applicable to criminal detention are as follows. (1) Conditions for Public Security Organs to Apply Criminal Detention The public security organs may detain the suspects in advance in the process of handling criminal cases. One is to prepare for a crime, commit a crime or be found immediately after a crime; Second, the victim or on-site witness identified him as a crime; Third, criminal evidence is found around or in the residence; Fourth, attempted suicide, escape or escape after committing a crime; Fifth, there is the possibility of destroying, forging evidence or colluding with confessions; Sixth, I don't tell my real name and address, and my identity is unknown; Seventh, there is a major suspicion of committing crimes at large, committing crimes many times, and committing crimes in partnership. (2) The conditions of criminal detention applicable to the procuratorate are: first, attempted suicide, escaped or escaped after committing a crime; Second, there is the possibility of destruction, forgery of evidence or collusion. Only the procuratorate and public security organs have the right to decide on criminal detention, and the court has no right to decide on criminal detention, but the court can decide to adopt judicial custody. The power to execute detention only belongs to public security organs and state security organs, and the procuratorate has no power to execute detention. For cases directly accepted by the procuratorate, the detention decision made by the procuratorate shall be served on the public security organ for execution, which shall immediately execute it, and the procuratorate may assist the public security organ in execution. When a public security organ detains a person, it must produce a detention permit. The "detention certificate" is issued by the person in charge of the public security organ at or above the county level, and the procuratorate does not issue a detention certificate. After detention, the family members of the detainee or their units shall be informed of the reasons and places of detention within 24 hours, except in cases where the investigation is hindered or notification cannot be made. The public security organ or procuratorate shall interrogate the detained person in a case put on file for investigation within 24 hours after detention. If it is found that he should not be detained, he must be released immediately and issue a release certificate.
Lawyers can meet with detainees during criminal detention.