GUIYANG -?Ten people died and five others were injured when a bus plunged into a river in Southwest China's Guizhou province Monday, local authorities said.

The accident happened at around 8:30 a.m. in Kaiyang, an outer county of the provincial capital Guiyang, the county government said in a statement.

The 19-seat bus, en route from Kaiyang to Weng'an county in Bouyei-Miao autonomous prefecture of Qiannan, veered off a road bridge on provincial highway S305 and fell into the river, it said.
Four people were reported missing in the accident.

Rescue work was continuing as of 12 p.m.

The local government has launched an investigation.