Pakistani security officials on Saturday alleged that NATO helicopters had attacked a border post, killing at least eight troops and injuring four more, dpa reported.
The attack occurred around midnight in Mohmand agency, one of the seven Pakistani tribal districts from where Taliban and al-Qaeda fighters infiltrate into Afghanistan to target NATO-led forces.
A military spokesman said NATO helicopters had targeted Salala border post, manned by paramilitary troops, and there were reports of casualties in the incident. "We are trying to ascertain the casualty figure."
An official at the paramilitary Frontier Corps headquarters in Peshawar, the capital of north-western Khyber-Pakhtunkhwa province, said initial reports showed seven soldiers and an officer were killed and four troops were wounded.