Nation Investigation Agency (NIA) has taken over the investigation of a case related to seizure of Fake Indian Currency Notes (FICN) notes in Guwahati in Kamrup Metropolitan District of Assam on April 5, reports Telegraph on June 2. On April 5, FICN worth 184,000 in 420 denominations of INR 200 and 200 pieces of INR 500 were recovered from three individuals.