BANNU - At least two persons, including a policeman and militant, were killed on Sunday in an encounter between militants and police force in Bannu District. Soon after the incident, the militants successfully fled from the scene. According to details, police received a tip-off that some suspected persons aboard two vehicles would enter Bannu. After receiving the information, police cordoned off the entire area. All of sudden, some militants boarding two vehicles appeared there and started indiscriminate firing at the policemen. As a result a police driver, Imran, was killed on the spot. Police also retaliated and killed one militant, namely Ali Sher, resident of Lewan Dariz. Later, the militants successfully managed to escape from the scene, leaving behind one of their vehicles bearing No CT-9082 Karachi, an LMG rifle, a wireless set and a handgrenade, on the spot.