A nine-storey garment factory collapsed following a boiler explosion early Monday, killing at least four people and trapping 200 others, police and rescuers said. Police said at least 300 people were in the sweater-making factory near Savar, an industrial town 32 kilometers (20 miles) northwest of the capital Dhaka, when it collapsed. "Four bodies have so far been recovered and we fear more than 200 people are still beneath the rubble," said Selim Newaz Bhuiyan, a fire brigade official at the scene. At least 60 injured workers were pulled from the debris and taken to hospitals, he said.