Legal basis: Article 19 of the Criminal Procedure Law of People's Republic of China (PRC) shall be investigated by public security organs, except as otherwise provided by law. Crimes such as illegal detention, extorting confessions by torture, and illegal search. When the people's procuratorate conducts legal supervision over litigation activities, it finds that judicial personnel have violated citizens' rights by taking advantage of their functions and powers and damaged judicial justice, and may file a case for investigation. If a major criminal case of a functionary of a state organ under the jurisdiction of a public security organ needs to be directly accepted by a people's procuratorate, it may be placed on file for investigation upon the decision of a people's procuratorate at or above the provincial level. Cases of private prosecution are directly accepted by the people's courts.