HECHI,Guangxi - Four people were killed after their car collided with a coach early Wednesday morning in south China's Guangxi Zhuang autonomous region, local police said.

The accident occurred at about 3 am Wednesday, when a car collided with a coach on the No.210 National Road in Nandan county of Hechi city, killing all four people in the car instantly, police said.

Twenty-seven passengers were on the bus when the accident occurred, but none were harmed, police said.

According to a preliminary investigation, the accident occurred when the driver of the car took a curve while driving at an excessive speed and lost control of the vehicle.

Police said the victims have been identified as residents of southwest China's Sichuan province. A further investigation is under way.