Some unidentified ultras hurled a grenade on a police patrol at Muran Chowk in Pulwama town, 32-km from here, at around 4 pm, they said.
Five policemen were among nine people injured in the grenade attack , the officials said.
The entire area was immediately cordoned off and the injured were rushed to hospital, the officials said adding a hunt was on to nab the militants involved in the attack.
No militant outfit has claimed responsbility for the attack so far.