[7][8] Tripura, literally meaning "land adjoining water", is located in the extreme southwest corner of the Northeast.

Tripura's demography underwent a major change as a result of illegal migrants and refugees from former East Bengal and subsequently from Bangladesh.

The parallel rise of nationalism in the other states of the Northeast India had further complicated the situation more, resulting in a deadly armed conflict between India and rebel groups thus, creating the insurgency on ethnic lines as a Tribal versus Bengali conflict.

Anti-Bengali sentiments of Tripuri rebel groups had given birth to the United Bengali Liberation Front.

It is estimated that some of those armed cadres are still present at their hideout camps at Chittagong Hill Tracts, Bangladesh.