At least eight people have been killed and three others severely injured in an explosion in east China's Shandong Province, said sources with local government Thursday.
   
The blast occurred around 9:10 p.m. Wednesday at a factory producing explosive materials in Wulian county, said the sources.
   
The injured are now out of danger, they said.
   
Cause of the explosion is under investigation.

(Xinhua News Agency May 5, 2005)