An American helicopter, apparently working with NATO's ISAF, was fired upon from Pakistani positions. The Pakistanis say it was in their airspace; American officials deny wrongdoing.
NATO Says Fired On From Pakistani CheckpointPakistan's version of events:
KABUL, Sept 25 - The NATO-led International Security Assistance Force (ISAF) in Afghanistan has said its helicopters were fired on from a Pakistani military checkpoint along the eastern border.
There were no reports of any damage to the helicopters or any casualties, it said.
"ISAF helicopters received small-arms fire from a Pakistan military checkpoint along the border near Tanai district, Khost [Province] on September 25 while conducting routine operations in Afghanistan," ISAF said in a statement.
"At no time did ISAF helicopters cross into Pakistani airspace," it said... (link)
"There were two helicopters from Afghanistan that crossed into Pakistani territory," said the spokesman, Major-General Athar Abbas. "Our soldiers fired warning shots and those helicopters returned fire and flew back." (link)American officials confirmed they were US choppers:
"They were U.S. helicopters," Pentagon spokesman Bryan Whitman told reporters at a briefing. "The flight path of the helicopters at no point took them over Pakistan." (link)