Imphal, Nov. 5 :     The Border Security Force is gradually taking over the responsibility of conducting counter-insurgency operations in Manipur from the Central Reserve Police Force. Six BSF battalions will be deployed in the state by the end of this year, while five CRPF battalions will move out. The decision to replace the CRPF with the BSF was taken by the Union home ministry in the wake of the incident at Tonsen Lamkhai on October 3. Ten civilians, including polling officials, were indiscriminately gunned down by CRPF personnel following an attack on the latter by United National Liberation Front militants. The Manipur government lodged a complaint with the Union home ministry after the incident. The government also instituted a magisterial inquiry into alleged excesses by CRPF personnel. Officials sources said the Union home ministry was unhappy with the CRPF?s way of functioning, especially its role in counter-insurgency operations. The paramilitary force has failed to tackle insurgency in the state primarily because its personnel are not properly trained for the purpose. In recent times, insurgent outfits in the state have had the upper hand in encounters with CRPF personnel. The Union home ministry feels that BSF personnel are better-trained to assist the Army and the Assam Rifles in counter-insurgency operations in Manipur. Army officials under the Rangapahar-based 3 Corps have suggested that the government deploy BSF units in Churachandpur and Tamenglong, where the presence of Assam Rifles personnel is relatively less. Though Churachandpur is classified as a ?low threat area?, the district has become a haven for valley-based insurgents. On the other hand, Tamenglong is the domain of Naga rebels. Since the withdrawal of Army units from the state due to the Kargil conflict, both these hill districts have witnessed a spurt in militant-orchestrated violence. After the Army?s 57 Mountain Division moved out of its base at Leimakhong near here, the Assam Rifles took over the main responsibility of conducting counter-insurgency operations in the state. An Assam Rifles inspector-general equivalent to the rank of a major-general will soon be stationed at Leimakhong. Five additional Assam Rifles battalions are being raised in the Northeast for counter-insurgency operations. Most of these battalions may be deployed in Manipur. Official sources said 30 per cent of the personnel comprising the five new battalions will be from the region.