Two coaches of a metro train derailed near Central station in Kolkata on Wednesday morning.
Police said no passenger of the Dumdum-Central Station train was injured in the incident.
However, some passengers complained of uneasiness as lights went off inside the compartments immediately after the derailment at about 9.30 am, they said.
Panic-stricken passengers, who were evacuated through the driver's cabin door by the police and fire brigade personnel, protested over frequent snags in the metro rail services in the city.
Metro services have been suspended after the incident.
Metro Railway sources said railway staff and RPF personnel also lent a helping hand in evacuating the passengers.
Services were maintained between Maidan and Kabi Subhas station and arrangements were being made to resume service between Dum Dum and Girish Park station.
On October 12, Sobhabazar station of the Metro Railway was ransacked by passengers who were angry over the malfunctioning of train doors and consequent delay in the services.