A tripartite agreement among five insurgent groups of Assam, the Centre and the state government was signed on Saturday to end years of violence in the Karbi Anglong region.
The insurgent groups which signed the peace accord include Karbi Longri North Cachar Hills Liberation Front, People's Democratic Council of Karbi Longri, United People's Liberation Army and Karbi People's Liberation Tigers factions.
About 1,000 militants belonging to these groups have surrendered along with their arms and have joined the mainstream.
The accord is significant as Karbi Anglong, which is the territory of ethnic Karbi tribals, has seen years of violence, killings and abduction in the rebels' fight for a separate homeland.
Union Home Minister Amit Shah, who was present on the occasion, said the accord will bring lasting peace and all-round development in Karbi Anglong.
Assam Chief Minister Himanta Biswa Sarma said it was a historic day as the militants of these five insurgent groups will now join the mainstream and work for the development of Karbi Anglong.