Srinagar, Aug 12 - A civilian was killed when separatist guerrillas tossed a grenade at security forces in Jammu and Kashmir's Sopore town Wednesday morning, police said.

The grenade missed the target but exploded on the road at the busy bus stand in Sopore, about 50 km from here, leading to a civilian being killed and another being critically injured, an official said.

The area has been cordoned off.