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The All Tripura Tiger Force (ATTF) is a Tripuri nationalist insurgent group active in 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 Muslims.
According to the South Asian Terrorism Portal, the main objectives of the 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"
- Removal of suffrage from all immigrants who entered Tripura after 1956