As many as 12 coaches of the 16347 Thiruvananthapuram - Mangaluru Express derailed near Karukutty station, near Aluva, in Kerala early this morning.
No injuries or casualties have been reported and all passengers are safe, the Southern Railway said in a press release.
The train had left Thiruvananthapuram at 2040 hours last night and the derailment occurred near Karukutty station, after it had passed Aluva, at 0255 hours today, it said.
Since both tracks have been affected by the derailment, all train services passing through Ernakulam and Alwaye are likely to be delayed until the rescue operations are completed, the release said.
Mr. P.K.Mishra, Additional General Manager, Southern Railway, Mr. Prakash Butani, Divisional Railway Manager, Trivandrum and other senior officials have rushed to the spot to oversee the relief and rescue operations.
Buses have been arranged to transport passengers from Karukutty to Chalakudy from where they will be taken to their destination by special trains.
The Southern Railway has set up helpline numbers 9746769960, 9746761072 and 0471-2320012.
The cause of the mishap could not be immediately ascertained.