The police said it launched an anti-militancy operation in Chanakhan area of Sopore, 55 kms from here, with assistance of the army following information about presence of militants in the area.
As the security forces were closing on a house where the militants were hiding, the ultras opened indiscriminate firing on them, a police official said.
Three police personnel were injured in the militant firing, the official said, adding the area has been cordoned off and additional security forces have been rushed to prevent the militants from escaping.The injured were taken to the army's 92 Base Hospital where Assistant Sub Inspector Kafeel Ahmad succumbed to his wounds, he said.
The other injured have been identified as constables Manzoor Ahmad, Zakir Ahmad and Irfan Ahma
The exchange of firing between the two sides was on, the official said.