1, the longest period from criminal detention to arrest is 37 days, which is not comprehensive. Under different circumstances, the longest period of re-arrest is different (14 days, 17 days and 37 days respectively), and the period of re-arrest under three specific circumstances is 37 days;
2. If it is a case within 37 days, it is also within 37 days. It is not necessary to wait until 37 days, and sometimes it is arrested on the 20th;
3. After arrest, it usually takes 2 months to send it to the procuratorate for review and prosecution (up to 7 months in special circumstances);
4. In the stage of examination and prosecution, if the procuratorate decides not to prosecute, if the suspect is detained, it will be released immediately.
Legal basis: Criminal Procedure Law of People's Republic of China (PRC).
Article 86 The public security organ shall interrogate the detained person within 24 hours after detention. If it is found that it should not be detained, it must be released immediately and a release certificate will be issued.
Article 87 When a public security organ requests the arrest of a criminal suspect, it shall write a letter of approval of the arrest, together with case files and evidence, and submit it to the people's procuratorate at the same level for examination and approval. When necessary, the people's procuratorate may send people to participate in the discussion of major cases by public security organs.
Article 88 After the people's procuratorate has examined and approved the arrest, it may interrogate the criminal suspect. In any of the following circumstances, the criminal suspect shall be questioned: (1) having doubts about whether the conditions for arrest are met; (2) The criminal suspect requests to make a face-to-face statement to the procurator; (3) There may be major illegal acts in the investigation activities. When examining and approving an arrest, the people's procuratorate may ask witnesses and other participants in the proceedings and listen to the opinions of defense lawyers; If a defense lawyer makes a request, he shall listen to the opinions of the defense lawyer.