Reports from the region say U.S. troops were trying to help negotiate a resolution to the clashes, which have included artillery and gun battles between Pakistani and Afghan border guards that started on May 13. Dozens have been reported killed in that fighting.
Differing Accounts
There are widely varying reports about who was involved in this latest incident.
A spokesman for Afghanistan's Defense Ministry, General Zahir Azimi, says a Pakistani military officer shot dead two U.S. soldiers and injured two others while talks were going on in Pakistan's Kurram tribal area.
Azimi also says U.S. troops returned fire and killed several Pakistani soldiers.
However, a spokesman for Pakistan's Army, Major General Waheed Arshad, says the Afghan version of events is wrong.
Arshad says militants opened fire on a convoy, killing one U.S. soldier and one Pakistani soldier. He said two%
