Bangladeshi workers taking part in a search and rescue operation at a destroyed garment factory in Gazipur on Tuesday after a boiler explosion at the complex on the outskirts of Dhaka that killed 13 people and injured dozens. Police have filed charges ranging from negligence to murder, officials said yesterday. Monday's blast happened during maintenance work at the factory owned by Multifabs, whose top buyers include fashion chain Lindex, which is part of Finland's Stockmann, German supermarket chain Aldi, and Rexholm of Denmark. Police have blamed the accident on three boiler operators killed in the explosion and 10 unidentified people.