The procuratorate may be acquitted after the arrest. The arrest can only show that the procuratorate believes that the evidence is sufficient and is ready to prosecute. However, it is still possible to be acquitted at the trial. In addition, if there is new evidence to prove the suspect's innocence before the trial, the procuratorate will also withdraw the charges and release him. According to the provisions of China's Criminal Procedure Law, there are several cases of acquittal: (1) If the public security organ finds that the detained person does not constitute a crime in the process of interrogation according to law, it must immediately release him and issue a release certificate; (2) The people's court and the people's procuratorate shall immediately release the person who decides to arrest, and the public security organ shall immediately release the person who is arrested with the approval of the people's procuratorate and finds that it does not constitute a crime during interrogation according to law, and issue a release certificate; (3) If the people's procuratorate considers that the defendant does not constitute a crime in a case transferred or exempted from prosecution by the public security organ, it shall make a decision not to prosecute and immediately release the defendant in custody; (4) If the people's court considers that the defendant does not constitute a crime after trial, it shall make a verdict of innocence and release the defendant immediately after the verdict.
Legal objectivity:
Article 17 of the Criminal Procedure Law: If the organs, detention centers, prison administration organs and their staff who exercise the functions and powers of investigation, prosecution and trial infringe upon personal rights, the victims have the right to compensation: (1) Those who take detention measures against citizens in violation of the provisions of the Criminal Procedure Law, or take detention measures against citizens in accordance with the conditions and procedures stipulated in the Criminal Procedure Law, but the detention time exceeds the time limit stipulated in the Criminal Procedure Law, and then decide to dismiss the case, not to prosecute or terminate the judgment for criminal responsibility. (2) After taking measures to arrest a citizen, he decides to dismiss the case, not to prosecute, or to terminate the investigation of criminal responsibility after being acquitted; (three) according to the procedure of trial supervision, the retrial is changed to innocence, and the original sentence has been executed; (4) extorting a confession by torture or beating or maltreating others, causing bodily injury or death to citizens, or instigating or conniving others to beat or maltreat others; (five) the illegal use of weapons and police equipment, resulting in physical injury or death of citizens.