MULTAN: One person was killed and 32 injured when the Lahore-bound Karakoram Expr-ess derailed between Klanchwala and Samsatta near Bahawalpur at around 3:15 am on Saturday. Eleven coaches of the train derailed. Of the 32 passengers admitted to Bahawal Victoria Hospital, 15 were discharged and one was stated to be in critical condition. Passengers said they heard a big bang before the derailment in which four coaches overturned, according to railway officials. Hundreds of passengers escaped by breaking windows, they said.The incident occurred less than a week after four people were killed in a train crash near Jhelum. Minister of State for Railway Ishaq Khakwani told reporters an investigation had been launched and would be finished in two weeks. He did not rule out the possibility of sabotage.