COIMBATORE: The Kuniyamuthur police have registered a case against 12 students of a private college on charges of trespassing into a room and assaulting a 20-year-old youth and his friends on Friday night. All of them were arrested on Sunday. Five of them were remanded in judicial custody on Monday while others were released on station bail.According to police, the complainant, M Vaitheswaran, 20, of Sivaganga district, was staying with his friends in a rented room on the first floor of a building at Vijayalakshmi Mills in Kuniyamuthur. On Friday night, Karthikeyan, an acquaintance of Vaitheswaran, entered the room along with his associates and abused the complainant and his friends using obscene language. The group assaulted them with their hands, helmets and an iron rod, leaving Vaitheswaran with an injury to his left hand.They threatened Vaitheswaran and his friends with dire consequences. Vaitheswaran went to a hospital for treatment and lodged a complaint with the Kuniyamuthur police.Police registered a case against 12 students of Sri Krishna College under various sections of the Bharatiya Nyaya Sanhita (BNS), including Sections 296(b), 189(2), 191(2), 191(3), 115(2), 118(1) and 351(3).According to a police officer, a gang war between two groups of students is the primary reason for the assault. Some youths who have completed their studies continue to stay here with the students and act like gangsters.Out of 12 students, Bhavanth, 19, of Madurai, Tharun Kumar, 19, of Salem, Abdul Rahman, 22, of Madukkarai, Keshav Moorthy, 19, and Kathikeyan , 19, both from Dindigul, have been remanded in judicial custody.