Two armed men entered into a branch of Jammu and Kashmir Bank on the Tehsil office premises in Mehandi Kadal in Anantnag this afternoon.
Security personnel deployed there tried to apprehend the militants, but they opened fire, a police official said.
He said a CRPF head constable sustained bullet injury in his right hand.
One of the militants, who was carrying a weapon, managed to escape.
However, his accomplice was apprehended by police and CRPF personnel, the official said, adding he has been identified as Muneeb Ahmad Malla, a resident of Reshipora in Shopian district.