Four people were confirmed dead and 15 others injured when a bus bumped into a truck Thursday in south China's Guangxi Zhuang Autonomous Region, the local government said Friday.

The bus carrying 19 people was en route from the Nandan county seat to downtown Hechi, a city close to the regional capital of Nanning, when it had a head-on collision with a heavy-duty truck on National Highway No. 210 Thursday afternoon.

A spokesman of the Nandan county government said the bus driver was overtaking a tractor and did not see the coming truck.

Three passengers died on the spot and all the others aboard the bus were injured.

A fourth passenger died at the Nandan county hospital Thursday night.

One more victim was still in danger after an operation overnight, doctors at the hospital said Friday morning.

An investigation is going on.

(Xinhua News Agency October 20, 2006)