NEW : Three strikes occur in the Khyber Agency . Suspected militants are killed in one of the Three districts of Afghanistan 's tribal region . In the past , the strikes have focused on the Tirah valley . The intelligence officials asked not to be named because they were not authorized to speak to the media . Thursday marks the third suspected drone strike in CNN .
NEW : Three strikes occur in the Khyber Agency . Suspected militants are killed in one of the Three districts of Afghanistan 's tribal region . In the past , the strikes have focused on the Tirah valley . Thursday marks the third suspected drone strike in CNN .