Guwahati, June 26: With the arrest of a dreaded Ulfa militant, the Assam Police today claimed to have found vital clues in the attack on the CRPF camp in Bongaigaon district on June 21 by the banned Ulfa. Bongaigaon Superintendent of Police P Amarendra Borgohain said that a joint team of police and CRPF on a tip off apprehended the ultra, Sunil Rai, hiding in a house at Dumpara Kumargaon last night. On interrogation, Rai provided very important leads to the outfit's attack on the paramilitary force's camp at Panbari under Bijni police station on June 21, Borgohain said. Sunil this morning led them to a place where he hid two Chinese made grenades. Bureau Report