[Dawn] At least two security officials have been killed and several injured in a remote-controlled explosion, targeting a security forces convoy in Bara Tehsil on Thursday. According to FC sources, security forces also retaliated after the attack and killed three militants during an exchange of fire. Official sources said that the security forces convoy was doing a search operation in the area when the incident happened.Meanwhile, security forces have surrounded the whole area and have shifted the injured to Combined Military Hospital in Peshawar.