At least seven militants were killed and six security officials were injured in two separate clashes in Bannu and North Waziristan late night Thursday. According to a private TV, militants attacked a security forces camp in Jani Khel area of Bannu Thursday night. In retaliation by the forces four militants were killed while three security personnel were also injured in the attack. Meanwhile, at least three security personnel were injured when the militants attacked a security checkpoint in Miranshah. Three militants were also killed in retaliation by the security personnel deployed at Amin Check Post. Authorities have imposed the curfew for an unannounced period in Miranshah town following the attack on the check post.