The police are on the lookout for prime suspect -- 17-year-old Tarun. They have, however, arrested the rest of the accused -- Sunil (16), Laloo (17) and Rajneesh (17) -- after Shakti identified them. Sunil's father, S.K. Sood has also been arrested. The police are interrogating Sood on suspicion that he instigated the four accused. According to the police, the two groups had a fight on Saturday on the school premises. They reportedly fought over a baseball cap. Tarun and his friends reportedly bullied Manish and Shakti.