The central government declared all factions and wings of the National Liberation Front of Tripura (NLFT) and the All Tripura Tiger Force (ATTF) as "unlawful" groups. Both the groups have been declared "unlawful" under the stringent UAPA law. 📰 Centre Declares National Liberation Front of Tripura and All Tripura Tiger Force As 'Unlawful Associations' Under UAPA.