Five people died and three others were injured in a coal mine gas explosion in s

Five people died and three others were injured in a coal mine gas explosion in southwest China's Chongqing, local authorities said on Monday.
 
The explosion occurred at about 11:45am Monday at the Liyuanba coal mine in Shihao Town, Qijiang District, according to sources with Chongqing Energy Investment Group Co Ltd.
 
The coal mine, which is owned by a subordinate company of the Group, had been shut down before the accident. The blast happened when workers were sealing off the mouth of the pit.
 
The injured were being treated in a local hospital. An investigation into the cause of the blast is under way.