Legal basis: Criminal Procedure Law of People's Republic of China (PRC).
Article 1 This Law is formulated in accordance with the Constitution in order to ensure the correct implementation of the Criminal Law, punish crimes, protect the people, safeguard national security and social security, and safeguard the socialist social order.
Article 2 The tasks of People's Republic of China (PRC) Criminal Procedure Law are to accurately and timely ascertain the facts of crimes, correctly apply the law, punish criminals, protect innocent people from criminal investigation, educate citizens to consciously abide by the law, actively fight against criminal acts, safeguard the socialist legal system, respect and protect human rights, protect citizens' personal rights, property rights, democratic rights and other rights, and ensure the smooth progress of socialist construction.
Article 3 The public security organs shall be responsible for the investigation, detention, execution of arrest and preliminary examination of criminal cases. The people's procuratorate shall be responsible for the prosecution, approval of arrest, investigation and prosecution of cases directly accepted by procuratorial organs. The people's court is responsible for the trial. Except as otherwise specified by law, no other organ, organization or individual has the right to exercise these powers.