A civilian was killed and four others including three policemen were injured after militant attacked a security checkpost here in Peshawar on late Tuesday night. According to police, a group of terrorists stormed at the police checkpost located in Lagawar area of Matni district. A Kohat bound passenger bus passing by the scene at the time of attack also came under attack, resulting in death of a passenger on the spot and injuring another. Three police cops were also injured in the attack. The police promptly retaliated the attack forcing the militants to retreat. Sources claimed that the attackers were from Darra Adam Khel. The injured persons were shifted to Lady Reading Hospital (LRH) for treatment of their wounds where according to hospital sources condition of one injured person was serious. The police and other law enforcement cordoned off the area after the attack and launched search operation but no arrests could be made.