At least three people were killed and 13 others wounded in an accidental blast at a building in Peshawar on Saturday, officials said. "It was a low intensity explosion caused by a chemical reaction," local bomb disposal chief Shafqat Malik told media. He added that the blast occurred in a chemical shop in the market. City police chief Liaqat Ali Khan also confirmed the blast was accidental and caused by a chemical reaction, promising "stern action against those dealing with dangerous chemicals in densely populated areas of Peshawar." Top local administration official Sahebzada Mohammad Anees said: "Three people were killed and 13 others wounded in the explosion." A senior doctor at the government's main Lady Reading Hospital, Zafar Iqbal, said two bodies and 13 injured had been brought to the hospital." A doctor at Peshawar's Khyber Teaching Hospital, Mohammad Imran, said one dead body was taken to his hospital.