The People’s Liberation Front of Meghalaya (PLF-M) is a relatively new terrorist group operating in the Garo Hills of Meghalaya. The outfit operates mainly around Dainadubi, Williamnagar, in East Garo Hills, and Dalu in West Garo Hills. It is led by Vincent A. Sangma, who is the chairman of the outfit. It claims to represent the Garos in Meghalaya.

When the Hynniewtrep Achik Liberation Council (HALC) split in 1992, it resulted in the formation of the Hynniewtrep National Liberation Council (HNLC), which represents the Khasis in Meghalaya, and the Achik Liberation Matgrik Army (ALMA), which wanted a separate Garoland State for the Garos. The PLF-M is an offshoot of this Achik Liberation Matgrik Army (ALMA). Most of the ALMA terrorists surrendered in 1994, but a few formed the Achik National Volunteers' Council (ANVC) in 1995. The PLF-M consists of some of these "surrendered rebels" of the erstwhile ALMA who returned underground after their rehabilitation scheme failed. The exact strength of the outfit is not known.

The claimed objective of the PLF-M is economic development of the Garo Hills, as well as better educational opportunities for the Garo tribes in Meghalaya. It also demands a separate state for the Garos. In March 2001, Chengku Momin, the ‘minister for information and publicity’ of the PLF-M passed an "order" warning all non-Garos not to contest the State Assembly and district council elections slated for 2003. The reason given for this order was that the Garos would face a number of problems if the non-Garos contested and won elections. The PLF-M stated that it was apprehensive that the non-Garos would utilise the maximum benefits for themselves if they won the elections and this would politically weaken the Garos. In order to ensure good governance and ensure that the Garos received maximum benefits, the PLF-M also warned the Garo ministers and legislators in Meghalaya to make greater efforts towards increasing the welfare of their community. The PLF-M asked each elected representative to visit their constituency for not less than a month to see the problems the people faced.

The PLF-M has been known to use extortion as a tool to generate funds. In early July 2000, the PLF-M had slapped extortion notices on some MLAs, including two ministers, from Garo hills in Meghalaya. The two ministers were the State Minister of Planning, Lotsing A. Sangma and the State Minister for social welfare, Admiral K. Sangma. Later, on January 15, 2001, the West Garo Hills police busted a large extortion racket of the PLF-M and arrested a senior cadre of the outfit from Dalu area. They recovered ten extortion letters, each demanding a sum of Rs 2 lakh from all the major coal exporters located mostly in Gasuapara, South Garo Hills. The letters were signed by the area commander of the outfit, one LK Sangma, and approved by Vincent Sangma, chairman of the outfit.

Other than extortion, the modus operandi of the PLF-M includes snatching of arms, recruitment of cadres, and attacking security force personnel. In response to the killing of a PLF-M leader at Nagalbibra, South Garo Hills on February 8, 2001, Vincent A Sangma, chairman of the outfit, issued a ‘decree’ for the next three months to target security personnel operating in the Garo Hills area.