After the National Investigation Agency recovered Rs. 44,000 from Razia Bibi, widow of the terror suspect in the October 2 Burdwan blast in West Bengal, the agency is now investigating where the money came from. The trail has led the National Investigation Agency or NIA to Choppadandi town in Karimnagar district of Telangana where a State Bank of India branch was robbed in February. The robbers had fled with 46 lakh rupees.