Kolkata, Apr 9: One person has been critically injured after an explosion at Kolkata’s Dum Dum cantonment railway line in West Bengal. The explosion occurred on Monday morning. Ten crude bombs have also been recovered at the spot of the explosion. The police and railway police force are present at the spot and are probing the incident.

The explosion comes just two days after a bomb was recovered on Saturday night from an under-construction metro tunnel in Kolkata. The bomb was recovered from Subhas Sarovar under-construction metro tunnel.

Bomb disposal squad and senior police officials rushed to the spot after receiving information from metro worker.