Can criminal detention be extended after 37 days?

The longest detention is 30 days, and there are still 7 days to arrest, so there are 37 days in total. According to the law, criminal detention cannot be extended after 37 days. If the procuratorate decides to approve the arrest, the criminal detention measures will be changed to arrest measures, and the criminal suspect will continue to be detained in the detention center until the end of the trial. If the procuratorate does not approve the arrest, the public security organ will generally change the compulsory measures to residential surveillance or bail pending trial. Article 69 of China's Criminal Procedure Law clearly stipulates the duration, extension and reasons of criminal detention by public security organs.

In other words, the extension of detention period is divided into two categories:

1, the time for submitting for approval of arrest under "special circumstances" may be extended 1 to 4 days;

2. For "major criminal suspects who commit crimes on the run, commit crimes repeatedly, and commit crimes in partnership", the time for submitting for examination and approval of arrest may be extended to 30 days. Visits after criminal detention can only be met by lawyers with suspects, but family members are not allowed to meet and visit. Under normal circumstances, the longest period of criminal detention is 14 days, but under special circumstances, the longest period can be extended to 37 days. During the period of criminal detention, the public security organs should also investigate the case as soon as possible, and then see whether to lift the criminal compulsory measures or change the compulsory measures according to the investigation.

Legal basis:

Criminal Procedure Law of the People's Republic of China

Article 82 The public security organ may detain a flagrante delicto 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;

(two), the victim or the person who saw him at the scene identified him as a crime;

(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, address, unknown;

(seven) there are major suspects such as escape crime, repeated crimes, and partnership crimes.

Article 85 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.