Legal basis:
Article 162 of the Criminal Procedure Law stipulates that when investigating a closed case, the public security organ shall ensure that the facts of the crime are clear and the evidence is true and sufficient, and write a prosecution opinion, which shall be transferred to the people's procuratorate at the same level for examination and decision together with the case file and evidence; At the same time, inform the criminal suspect and his defense lawyer about the transfer of the case. If a criminal suspect voluntarily pleads guilty, it shall be recorded and transferred with the case, and the relevant information shall be stated in the prosecution opinion.