Is the investigation of criminal cases confidential?

The investigation organ shall keep the case confidential before examining and prosecuting. Even for lawyers, only the basic information of the case can be provided, and the investigation is confidential. After filing a case, the public security organ can take technical investigation measures against crimes endangering national security, terrorist activities, organized crimes of underworld nature, major drug crimes or other crimes seriously endangering society after strict approval procedures according to the needs of investigating crimes. Article 148 of the Criminal Procedure Law of People's Republic of China (PRC), after putting a case on file, the public security organ may take technical investigation measures against crimes endangering national security, terrorist activities, organized crimes of underworld nature, major drug crimes or other crimes seriously endangering society according to the needs of investigating crimes and through strict approval procedures.