The Pakistani government has given the US fifteen days to vacate an airfield in Balochistan province after an alleged cross-border attack which killed at least 24 Pakistani soldiers.
The attack on a military checkpoint in northwest Pakistan also wounded at least a dozen soldiers. A spokesman for the NATO-led alliance in Afghanistan confirmed on Saturday that it was "highly likely" the alliance's aircraft killed Pakistani soldiers.
"Close air support was called in, in the development of the tactical situation, and it is what highly likely caused the Pakistan casualties," General Carsten Jacobson, a spokesman for the NATO-led International Security Assistance Force (ISAF), told the Reuters news agency.
The incident prompted Pakistan to summon the US ambassador in Islamabad, lodge a protest with NATO, and shut a vital supply route for NATO troops fighting in Afghanistan.