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The All Tripura Tiger Force (ATTF) is an isolationist group from the Tripura region of India. It was founded on July 11, 1990, by a group of former Tripura National Volunteer members under the leadership of Ranjit Debbarma. The ATTF is currently considered a terrorist organisation by India. The rebellion, in which it is involved is the Tripura Rebellion. According to the South Asian Terrorism Portal, approximately 90% of the ATTF's administration are Hindu and the rest are Christian.
According to South Asian Terrorism Portal the main objectives of ATTF are:
- To expel all Bengali-speaking settlers settled in Tripura after 1956.
- Return tribal lands to their original owners under the 'Tripura Land Revenue and Land Reforms Act'
- Purge voter rolls of all immigrants who entered Tripura after 1956.