The National Investigation Agency (NIA) has intensified probe against the recruitment drive of United Liberation Front of Asom-Independent (ULFA-I), reports Northeast Today. Taking over the case, NIA has contacted the police officials of Assam’s Dibrugarh, Chapakhowa and Sivasagar Districts, for verifying the facts and exact number of youths who recently joined the group. According to intelligence reports, several youths has joined the outfit recently, and have already been sent for training in ULFA-I hideouts across different places of Myanmar.