Legal basis: Article 87 of the Criminal Procedure Law states that when a public security organ requests the arrest of a criminal suspect, it shall write a letter of approval for 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 of the Criminal Procedure Law The people's procuratorate may interrogate the criminal suspect after examining and approving the arrest. 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 question 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.