Agartala, Feb. 12 -- Tension gripped Tripura after tribals backed by the Tripura Students Federation (TSF) threatened to block the National Highway and Railway services from Monday for an indefinite period.

TIPRA Motha's student wing TSF is opposing the state government's decision to allow only Bengali script for writing Kokborok language papers in the secondary and higher secondary board examinations.

The Kokborok language is spoken by around 10 lakh tribal people in the state.

The higher secondary and secondary examinations in Kokborok are scheduled for March 4 and 7, respectively, when about 10,000 students will write the papers.

Earlier, Chief Minister Dr. Manik Saha discussed the matter with senior tribal BJP leaders, but the mee...