Preliminary interrogation reveals that the accused procured improvised firearms and live ammunition from Kagharia, Bihar, an officer said.

The Special Task Force (STF) of Kolkata Police on Monday morning arrested a man from Sealdah railway station after firearms were seized from his possession, an officer said.
Acting on a tip-off, STF personnel arrested the man, a resident of Kaliachak in Malda district, under Arms Act, he said.
The man took the Hate Bazare Express to reach the city this morning.