Four people were killed and three injured in an explosion, which police are treating as suspicious, at a mine in north China's Shanxi Province, Xinhua quoted police as saying on Wednesday. The explosion occurred at about 4:00 p.m. on Wednesday in the offices of the Shanjipo coal mine in Taitou town, Xiangning County, said a Xiangning police officer. The injured people have been taken to hospital. The identities of the dead are still unknown. The officer said local police have listed it as a criminal case and are investigating, without giving details.
