On early morning of May 26, 2013, an armed robbery case occurred in Chengdu City, Sichuan Province. One of the victims called emergency number 110 and people around came up and helped arrest the robber. Quickly a black Mercedes without car plate appeared on the scene, 4 “civilian clothes” who claimed to be police officers and investigators requested to take away the robber. But they were soon identified by the people as fake police and the vehicle was overturned. The four of them gave up the car and tried to flee away but the people managed to catch one of them. Then the police arrived and took over the situation.