SHENYANG, Sept. 13 (Xinhuanet) -- An explosion in a petroleum company in Jinzhou of northeast China's Liaoning Province Friday killed at least three people and injured more than 30 others.

　　The explosion occurred at about 5:00 p.m. Friday at a decompression workshop of the Jinzhou branch of the China National Petroleum Corp (China Petrol). The cause of the explosion is under investigation. Enditem