In the ongoing operations in Orakzai tribal region the forces killed 22 militants and arrested 25 others, a private TV reported. Two security men were also martyred in fighting and four others were injured. According to sources, in search operation in Khoidadkhel area of the lower Orakzai region, security forces killed 12 militants, arrested 25 others with large quantity of arms and munitions. Two security men were also injured in the clash. In another incident, terrorists launched an attack with heavy weapons at a check post of the forces in Chhapri Ferozkhel area in Orakzai Agency. Two security men were martyred in the attack and two others were injured, sources said. The troops repulsed the attack and killed 10 attackers in the incident. Two vehicles of the militants were also destroyed in the incident.