CHENGDU - Two people were killed and another 15 were injured after a passenger bus collided with a motorcycle in Southwest China's Sichuan province on Thursday, local authorities said.

At around 3 pm on Thursday, a bus, with 16 passengers on board, went down a mountain slope on the side of highway after it collided with the motorcycle in Renshou county, the Sichuan Provincial Administration of Work Safety announced.

A passenger on the bus and the motorcycle rider were killed at the scene. The 15 injured had been rushed to hospital.

The cause of the accident is under investigation.