Rafiq Ahmad Rather was killed when CRPF personnel allegedly opened fire to disperse protestors outside their camp at Gagran village, 52 km from here, they said.
A large number of people had assembled outside the camp to protest the killing of four persons, including three local youth, by CRPF troopers last Saturday.
The protestors were demanding removal of the CRPF camp and arrest of the personnel involved in the "cold blooded murders".
Soon after the death of Rather, the protestors went on the rampage and set ablaze the official residence of a senior officer in the town, they said.
Curfew was imposed in the south Kashmir town on Sunday following widespread clashes between security forces and agitated residents after the killings. It was lifted this morning.
However, a spontaneous strike was observed in the town with all shops and business establishments closed and transport off the roads.