AGARTALA, Aug 26 (TIWN): A 12 hrs strike has been declared by Twipra Students' Federation (TSF) on Monday, that is 28th August statewide. TSF said, for last 50 years TSF has been demanding Roman script for Kokborok language but the Govt did not respond. “We gave two months ultimatum to the Govt to take our demand to the higher level but seems the Govt has put a deaf and blind notion towards our demands".