The Times of India. Thiruvananthapuram, Nov 11 (PTI) Police on Wednesday night removed the hunger strike tent of Lower Primary School Teacher (LPST) rank-holders protesting in front of the secretariat here, and. THIRUVANANTHAPURAM: The police arrested and removed S Valarmathi, secretary of the LPST (Lower Primary School Teacher) rankers strike committee, who was protesting in front of the Secretariat.