A dozen students were injured in the violence that began on Saturday and continued into early Sunday. Police sources said one student was seriously wounded and warded in a Delhi hospital.

University property, including vehicles, were set on fire in the free for all, a police officer said. The proctor's office was partially burnt.

The trouble began on Saturday when an unidentified person fired at a student from Moradabad near the Mumtaz Hall, some students said.

Two persons suffered bullet wounds, one of them died later.

A group of students went to the proctor's office to lodge a complaint. This triggered violent clashes which continued through the night.

The Rapid Action Force (RAF) and police reinforcements were deployed in the campus. University authorities said on Sunday that the situation was now under control.

A university official identified the person who died as Rahat Abrar, an expelled student.

A seriously injured student had been admitted to the Ganga Ram Hospital in New Delhi. "I think the cause of the clash is regionalism," said one official.