New Delhi, April 27 -- The National Investigation Agency (NIA) on Monday filed a case to probe recovery of 79 crude bombs in West Bengal's Bhangar area, following a directive by the ministry of home affairs on Sunday.

A First Information Report (FIR) has been registered, NIA spokesperson said.

The case dated April 25 was initially filed at Uttar Kashipur police station under the Bhangar division of Kolkata on Saturday.

"The case pertains to the recovery of 79 crude bombs and other incriminating materials by Kolkata police, which were being stored at a spot on April 25, thereby endangering human life and property," the spokesperson said.

The action came when the Election Commission of India (ECI) instructed the state police to arrest b...