15 people were injured in a grenade attack near a bus standin Sopore district on Monday, Jammu and Kashmir Police said. Security forceshave cordoned off the area and a search is underway to nab the attackers.

One of the 15 persons sustained serious injuries and was referred to a hospital in Srinagar, officials said. The remaining are undergoing treatment at a local hospital, they added.

No arrests have been made so far, police said. The attack comes two days after "unknown terrorists" lobbed a grenade on Karan Nagar police station in Srinagar, thereby injuring six CRPF personnel.

The 144th battalion of the paramilitary force was manning a checkpoint at the police station when the incident took place. The grenade explosion caused panic in the area, followed by firing which was promptly retaliated by the special forces troops.