Tezpur, Mar 22: Suspected NDFB militants kidnapped two persons at gunpoint from lower Assam's Sonitpur district, a senior police official said today. A contractor and a grocer were abducted by a six-member gang yesterday from Mijihajang near Assam-Arunachal Pradesh Border, ASP (HQ) Jayashree Therse said. NDFB was suspected to be behind the incident as the outfit had earlier demanded ransom from the two abducted persons, she said. Army and police have launched a massive search to rescue them, she added. Bureau Report