A destroyed police vehicle is seen after it was hit by a hijacker on a street in Tianjin municipality, February 1, 2010. A man hijacked his employers' bus on Monday, knocking down pedestrians and killing nine people as he careened through the northern Chinese port city of Tianjin. The 40-year-old man, a dispatch clerk in a transport company, stole the company bus, which was empty, after attacking a fellow clerk with a knife in an argument, the Xinhua News Agency said.