Muzaffarpur, April 7: The ugly tentacles of decade-old caste conflict resurfaced on the premises of Muzaffarpur Institute of Technology (MIT) last night after a boy offered a chocolate to a friend of a different caste.

A clash between two groups of students on the institute premises ensued. Five students sustained severe head and body injuries. Two students, who sustained brain injuries, have been rushed to Patna for treatment. The other three have been admitted to private nursing homes at Juran Chapra locality.

Tension brewed on the MIT campus after a student of the 2009 batch allegedly offered a chocolate to a girl of a different caste. Boys belonging to the girl’s caste came to know about it and threatened the boy who had offered the chocolate. The altercation soon snowballed into a violent fight, injuring students from both the groups.

MIT principal Dhuruv Prasad refused to divulge the reason behind the clash. He said he would try to ascertain the cause of the fight.

The district police visited the campus and took control of the situation. The police vigil has been intensified on the campus.