BEIJING—A bus carrying 36 people veered from a road in heavy fog and crashed into a valley in western China, killing at least 15 people, state media reported.

The accident happened Tuesday afternoon when the bus was traveling to a tourist spot near Changji city in the Xinjiang region, the official Xinhua News Agency reported.

A Changji police official, who gave only his surname, Ma, confirmed the accident, but didn't have any information about casualties.

Road accidents are common in China because of poor road conditions and bad driving habits.