Railway minister Suresh Prabhu ordered an inquiry on Wednesday into the derailment of the engine and two coaches of the Rajendra Nagar-Guwahati Capital Express, which left two people dead.
Though the suspected cause of the accident was overshooting a signal by the driver of the train, a thorough inquiry will be conducted and action will be taken against the guilty, said a senior railway ministry official.
The railway minister has ordered the inquiry.
The engine and two coaches of the Capital Express derailed near Samuktala Road in Alipurduar of West Bengal at around 9.15pm last night.
While two people died in the accident, six passengers received minor injuries, according to railways.
About 150 of the stranded passengers were taken back to Alipurduar Junction by Kamakhya-Alipurduar Inter City Express. The unaffected portion of the train was detached. The train will resume journey once the relief operation is completed, he said.
The Accident Relief Train reached the site of the accident at 10pm with railway doctors and relief materials.
Railways have operationalised helpline numbers at the site -- 9002052957, 8585082833 and 03564-259935 -- to help the relatives of passengers.