The ongoing investigation into the death of a 29-year-old Beijing man who was found dead in police custody on Saturday evening has seen a new development. The prosecutor has announced that a third-party accredited body will be entrusted with performing a post-mortem examination at of Lei Yang’s body.

The official told Xinhua that, after intervening in the case, the Procuratorate has made site surveys, retrieved relevant video materials, and confirmed information from Lei’s family, local residents and the police. He added that the post-mortem examination will also be supervised by a medical examiner from the Beijing Municipal People's Procuratorate.

Lei, who graduated with a master's degree from the prestigious Renmin University, died on the night of May 7, after police raided a foot massage parlor that was alleged to be hosting prostitution. Police claim that Lei had hired a prostitute for 200 yuan when they apprehended him.

After his death, Lei’s family raised doubts about the official police story and demanded further investigation. Their main concern is whether the law enforcement officers involved in Lei's death followed protocol. To find out what really happened, they agreed to have a post-mortem examination performed on Lei. The case is still under investigation.