Six coaches of Naihati-Sealdah EMU local derailed this morning immediately after it left the platform number 2 of Dum Dum station at 6.05 AM, Eastern Railway spokesperson said.
Nobody was injured in the incident, the spokesperson said, adding that Dum Dum-Sealdah line was affected as a result of the derailment.
The suburban train services to Sealdah station were affected but the services on the main line from Sealdah was normal, officials said.