Twenty-seven people, including four cops, were seriously injured in a grenade explosion at Pulwama in south Kashmir on Friday morning.

The police said the militants hurled the grenade on a passing police vehicle. The injured people have been shifted to hospital.

In another incident, three people, including two policemen were injured, when militants attacked the heavily guarded Charar-e-Sharief police station with a grenade in central Budgam district.

The were taken to a hospital. The grenade, the police said, exploded inside the complex.

No one has yet claimed responsibility for the attack.

Two days ago an official of the paramilitary Border Security Force died in a gunbattle near Charar-e-Sharief.