The death toll from a coal mine explosion in northern China rose to 17, dpa reported. The explosion at the Liugou coal mine in Linfen city in the northern province of Shanxi, injured 75 people, the semi-official China News Service reported. An initial investigation showed the blast was caused by explosives hidden in a dormitory area, and one suspect was detained by police, the report said. Rescue work was still underway. Last year, 2,631 people died in coal-mine accidents nationwide, the State Administration of Coal Mine Safety reported.