An Assistant Sub-Inspector (ASI) of Police was killed and two constables were injured in a grenade attack in Yar Hussain Bazaar area of Swabi District in Khyber Pakhtunkhwa on April 7, reports Dawn. According to a statement by Swabi Police, ASI Sahir Khan and Constables Gul Nasib and Ijaz were performing beat duties in Yar Hussain Bazaar undefined militants threw a hand grenade inside their car while they were on their way.