'We received a call that a body is lying in Maurice Nagar area. He was later identified as Parminder Singh. Himanshu is being interrogated in the case,' the officer said.

A court in Maharashtra had on July 13 had acquitted six students accused of beating to death Prof Sabharwal in Ujjain's Madhav College in August 2006.

The six accused, said to be activists of the Akhil Bharatiya Vidyarthi Parishad (ABVP) -- the student wing of the Bharatiya Janata Party (BJP) -- were let off due to lack of evidence against them.