Death tolls vary but the Hindustan Times is reporting at least 50 dead.
Coromandel Express, which was going from Kolkata to Chennai, rammed the derailed coaches of the other train, which was going from Bengaluru to Kolkata, Railway Ministry spokesperson Amitabh Sharma told NDTV.
The accident happened around 7.20 pm local time near Bahanaga Bazar station when the train was on the way to Chennai Central station from the Shalimar station near Kolkata.