Militants and security forces on Thursday night exchanged fire in various parts of Bajaur Agency, wounding four Levies personnel, sources said on Friday. Militants blew up a Levies Aurang checkpost in Utman Khel tehsil and Qamarsar and Sahui checkposts in Mamoond tehsil. Levies at the checkposts opened fire on the attacking militants. Havaldar Bacha and soldiers Ali Rehman, Jehangir and Farooq were injured in the crossfire and were shifted to a hospital. The assailants also snatched four Kalashinkovs from the security forces and fled. Meanwhile, armed men kidnapped an Afghan shopkeeper from his shop in Nawagai market for allegedly spying on militants. Also on Friday, officials arrested several suspects thought to have robbed Education Department officials of teachersÂ’ salaries amounting to Rs 15,000,000.