Zafar Ali Khan, a constable of the Special Police Force escorting a polio vaccination team, was shot dead in the Ghalo Tangay area of Elai union council in Buner District of Khyber Pakhtunkhwa on April 24, reports Dawn. The attackers opened fire on constable Zafar Ali Khan in the Ghalo Tangay area when he was accompanying a polio team, killing Khan on the spot.