A person was critical after an explosion was reported at Kolkata's Dum Dum Cantonment railway line on Monday.
Due to the blast, the person has lost his hand. Dum Dum police and railway police are currently at the spot and are probing the incident.
The police personnel recovered at least ten crude bombs.
More details are awaited.
(This story has not been edited by Business Standard staff and is auto-generated from a syndicated feed.)