Pakistani Security forces killed at least 15 militants in an air strike launched Thursday northwestern Pakistan. The airstrikes targeted each of Khadizai, Sama bazar, Bermela and Mamuzi areas in the Upper Orakzai tribal zone, hitting four militants hideouts while killing 15 militants and injuring many others, senior military officer said. Earlier this month, Pakistani forces led similar air strikes, killing 12 militants and injuring ten others at the same province.