At least 31 people were killed in Iran today when a passenger train rammed into the back of an intercity express which had broken down. The provincial governor said that more than 70 people were admitted to hospital after the crash in the northern province of Semnan on the main line between the capital Tehran and second city Mashhad.<br/><br/>Emergency services were still battling to put out the fire and rescue injured passengers from the overturned carriages. The province's Red Crescent director, Hassan Shokrollahi, said the remote location of the crash site had complicated rescue efforts. The injured were taken to hospitals in Semnan and Damghan.