Nato-led forces say they have killed more than 50 insurgents on Pakistani soil after a rare pursuit across the border from Afghanistan.
The two Apache attack helicopters from the Nato-led International Security Assistance Force (Isaf) crossed the border from eastern Afghanistan on Friday after the fighters attacked a remote Afghan security outpost in Khost province.
The raid was followed up on Saturday morning when two Kiowa helicopters returned to the border area killing four more insurgents.
Manned military flights across the border are extremely rare as anti-American feeling runs high in Pakistan.
Pakistani media reported that the targets were members of the Haqqani Network. The United States regularly uses pilotless drone aircraft for missile strikes in Pakistan’s borderlands, known to be a haven for groups including the Afghan Taliban who launch cross-border attacks from Pakistan’s northwest.
Apart from the Afghan Taliban, the Haqqani network also operates extensively in Afghanistan’s east and has launched a series of bold attacks against foreign forces and Afghan government targets in the past year.