Iran's official IRNA news agency said Sunday the head of the country's railways has resigned over the deadly collision of two trains in the north of the country which killed 45 passengers.

According to ABC News, Mohsen Pour Seyyed Aghaie submitted his letter of resignation on Sunday and it was accepted by Minister of Transportation Abbas Akhoundi.

IRNA quotes Aghaie as saying the accident was caused by "wrong decisions."

The accident happened on Friday when a moving passenger train slammed into a second train that was parked at a station. Some of the victims were so badly burned that the bodies had to be identified through DNA testing.

Source: MENA