Demanding a probe into the mysterious death of a 16-year-old girl in April, protesters prevented Tripura Chief Minister Manik Sarkar from entering the State Assembly on Thursday. Ruling Left members moved a censure motion in the Assembly against the stir, organised by the Trinamool Chhatra Parishad.No prior informationThe police allegedly had no prior information about the protest. They only learnt about it after activists assembled at the New Capital Complex, which houses the Secretariat, the Assembly and new Governor House. Carrying placards and seeking justice for Anwara Choudhury, the protesters shouted slogans and sat on the road as soon as the Chief Minister’s convoy appeared at the outer entrance. Stuck, the convoy turned back and Mr. Sarkar returned home.As police officers were supervising and detaining protesters, CPI(M) . chief whip Basudeb Majumder informed the House about the incident. Following this, Health Minister Badal Choudhury proposed a censure motion. The motion was adopted amid chaos, with the Trinamool Congress and CPI(M) MLAs exchanging allegations. Stating that the protest was well within the democratic rights, the Opposition condemned the government for its reluctance in carrying out a complete investigation into death of the first-year polytechnic student. The doctors had initially attributed her death to a heart attack. However, the police had later conceded that Anwara was poisoned and announced the arrest of her maternal uncle. There have been a spate of protests over the issue in the past two months by various student and social groups.