Rescuers search for missing people at the boat capsizing area in Wushan County of Chongqing, southwest China, July 29, 2016. The private boat capsized at about 5:40 p.m. in Wushan County where the Daning River meets the Yangtze. Ten people have been rescued. The cause of the accident remains unknown. (Xinhua)

CHONGQING, July 29 -- Ten people have been rescued after a boat capsized on a tributary of the Yangtze River in southwest China's Chongqing Municipality Friday afternoon.

The private boat capsized at about 5:40 p.m. in Wushan County where the Daning River meets the Yangtze, the Wushan County government said in a statement.

Earlier, it said 12 people were on board, but this was revised to 10.

Boat owner Hu Wanbao is the subject of a police investigation.

The survivors said it was not raining when the boat capsized but the water was high following recent flooding.