An initial investigation revealed that the attack came in two stages. The first occurred at about 11 a.m., after which Chen left the scene under protection of security staff. He hid in an office building at the coke plant, and the security staff locked him behind two iron doors. But more than 200 people attacked the building. At 4:38 p.m., sources said, someone found Chen hiding in the office and the doors were forced open.
According to a report filed by a Jilin official at the scene, the attackers included "people who were not former or current Tonggang workers." Some witnesses told Caijing that many people who did not wear company uniforms were among the rioters attacking Chen. They may have been tied to the area's "gray business" iron and steel operations.
Police were informed that Chen was in danger, but they were unable to rescue him. Rioters blocked police, ambulances and government officials who tried to reach the victim.
Inside the office building, according to a source, someone cried out, "Chen must die." And between 6 and 7 p.m., the deed was done. An autopsy determined that he suffered a skull fracture and brain hemorrhage.