Zhang, 40, a male deputy dispatcher of Tianjin Port Bonded Area Tianbao Transport Co., Ltd, quarreled and disputed with dispatcher Li. He then held a dagger to stab Li, and later hijacked a yellow sea brand bus and intentionally crashed into vehicles on the road in the development zone successively, resulting in 9 deaths and 11 injuries. After receiving the report, the police immediately dispatched dozens of police cars and dozens of policemen to intercept him. Three police cars were crashed to be scrap, and four policemen were injured. Finally, the suspect was captured at the intersection of Beihai Road and Ninth Avenue in Tianjin Development Zone.