The accident occurred at around 4 p.m. when a coach rolled over after colliding with a car at the Tianjin section of an expressway linking the city's Binhai New Area with the city of Baoding in neighboring Hebei Province.

Wang Qiang, an official with the city's traffic management bureau, said the coach was speeding and many passengers were thrown out of the vehicle when it hit the car and rolled over, causing heavy causalities.

Wang said the injured had been rushed to local hospitals for treatment.