Railway Minister Mukul Roy today said an inquiry into the Doon Express accident would be conducted by the Commissioner Railway Safety and stern action would be taken against the guilty. 

The minister along with the senior officials visited the accident site where the Doon Express derailed yesterday killing five persons and met the injured at the district hospital.

Prima facie the accident is not the act of anti-social elements, he said, adding it was a subject of inquiry and truth would come to fore within a week. Former Railway Minister and West Bengal Chief Minister Mamata Banerjee had yesterday demanded an inquiry into the derailment stating it should be probed whether it was an 'accident or an incident'.