A civilian was killed and a CRPF jawan injured when militants hurled a grenade at security forces in Pulwama district of Jammu and Kashmir today, police said. <br/><br/>A police official said the grenade was hurled at the security forces deployed on law and order duty at Murran chowk. He said the blast resulted in the death of a civilian identified as Mohammad Ayoub Wani and injuries to a CRPF jawan Daljit Kiran. Security forces have been put on a alert and a manhunt has been launched for the militants, he added.