A U.S. air strike killed at least two Afghan policemen and wounded four others in Helmand, officials said on Saturday, in apparently the first "friendly fire" incident since American Marines returned to the southern province in April.
Two other U.S. soldiers were injured in the shooting, which occurred in eastern Nangarhar province, according to an Afghan official on Saturday.
The soldiers were shot in an "inside attack", when a member of the Afghan Security Forces opened fire on the four men.
USA special operations forces have been fighting ISIS in the province alongside Afghan Special Security Forces.
Insider attacks had frequently happened in the past, when an Afghan solider or policeman fires on foreign forces, causing casualties. The President and I have been briefed, the details of this attack are forthcoming. In Milwaukee, Pence commented on the shooting: "When heroes fall, Americans grieve". The soldiers' identities weren't immediately available nor were their military branch.
During the joint operation of the Afghan National Defense and Security Force and North Atlantic Treaty Organisation forces, strikes resulted in the deaths and injuries to members of the Afghan Border Police.
Yesterday's attack came just hours after at least six Afghan policemen were wounded in an errant United States air strike in southern Helmand province. An Afghan source who declined to be named tells CBS News the gunman was the commander of an 11-soldier unit.
Indian, Pakistani Army trade fire on LoC
Yesterday, a third grenade attack took place in J-K's Pulwama district on a police station. The Indian Army posts have responded strongly and effectively, the spokesman said.
The Taliban say the Afghan soldier was one of their own.
Editor's note: This story is developing and will be updated as soon as additional information is available.
On Friday two Afghan border police were killed by friendly fire - the first such incident since U.S. Marines returned to the country's southern region in May.
Killing US soldiers by Afghan soldiers is not a news in Afghanistan and such incidents had been reported in past also.
Earlier, provincial spokesman Attaullah Khogyani told AFP that an Afghan commando had opened fire on USA troops and was killed in return fire. In an emailed statement, the USA military said only: "We are aware of an incident in eastern Afghanistan".
There are 8,400 American troops in Afghanistan training, advising and assisting the Afghan military in its fight against the Taliban. "The American invaders were there to support their Afghan slaves". U.S. military officials estimate there are about 600 to 800 ISIS fighters in Afghanistan, mostly in Nangarhar, but also in the neighboring province of Kunar.
Taliban spokesman Zabiullah Mujahid said the militants claimed responsibility for the attack.
Approximately 8,000 USA troops are deployed to Afghanistan as part of two separate operations.