In severe blow to the banned United Liberation Front of Asom, 31 militants, mostly from the ranks of the proscribed insurgent group surrendered before the army on Monday.

Thirty-one hardcore militants, including two female cadres, surrendered before the army at Dinjan base camp in Assam's Dibrugarh district.

The surrendered militants included 29 cadres from the ULFA and one each from the Karbi tribe militant group the Karbi Longri North Cachar Hills Liberation Front and the Bodo tribe militant group National Democratic Front of Bodoland that is now in truce with the government of India.

The ULFA militants were led to the surrender by the commander of the '27th battalion' of ULFA 'captain' Keshab Hazarika.

Indian Army's GoC 4 Corps Lt Gen BS Jaswal, Commandant of the 2nd Mountain Division Jatinder Singh, DIG (Eastern range) and the deputy commissioners of Dibrugarh and Tinsukia districts were among the officials present at the surrender ceremony.

The surrendered militants also laid down a huge cache of arms and ammunition including nine grenades, IEDs, pistols and rifles, one radio set and over 30 electronic detonators.