The incident took place in Kakapora tehsil of the district during the night and the area has been cordoned off, said an official.
Further details are awaited.
This is the second grenade attack on the security forces in Pulwama in the past 3 days.
On February 3, two civilians and three Central Reserve Police Force (CRPF) personnel were injured in a grenade attack on a patrol party of the security forces in Pulwama district of Jammu and Kashmir. (ANI)