Four people were killed and six others injured in a chain of road accidents on a highway in Guangdong Province, local traffic police said Sunday.

The accident occurred at around 9:30 PM on Saturday at the Dongguan section of the Guangzhou-Shenzhen highway, according to the city's traffic police. 

The accident blocked the highway and was not opened until early Sunday morning, traffic police said.

Meanwhile, a bus-truck collision on Sunday morning at an expressway in Fujian Province left seven people dead and 14 others injured.

The accident occurred at about 1:00 AM when a passenger bus hit the back of a heavy-duty truck in Zhangzhou City of Fujian Province on a section of the Tongjiang-Sanya highway linking China's northernmost province of Heilongjiang with the southernmost island province of Hainan, said local traffic police.

Seven passengers were killed outright including one from Hong Kong. Fourteen passengers were injured with three in critical condition. All the injured are being cared for in local hospitals, police said.

The causes of these two accident are under investigation.

(Xinhua News Agency April 24, 2006)