U.S. soldiers killed in Afghanistan

A spokesperson for Nangarhar province, Attaullah Khogyani, told Al Jazeera that an Afghan "army commando" opened fire on four United States soldiers.

One American official said the soldiers were shot in an apparent insider attack, also known as a "green-on-blue" because of the color-coding system used by North Atlantic Treaty Organisation.

Afghanistan has suffered a string of violent attacks in recent weeks after the Taliban launched their spring offensive, including attacks in the capital city of Kabul that killed and wounded hundreds.

Taliban spokesman Zabiullah Mujahid said the militants claimed responsibility for the attack.

White House spokesman Raj Shah told reporters traveling with the President Donald Trump in New Jersey that Trump was "following the emerging situation in Afghanistan".

Gen. John Nicholson, the top USA military commander in Afghanistan, told Congress earlier this year that a few thousand more US and North Atlantic Treaty Organisation personnel might be needed in the country. There have been more than 90 insider attacks in Afghanistan since 2008, killing at least 150 foreign soldiers and wounding 187, according to data by the Long War Journal blog cited by the Los Angeles Times.

The wounded soldier has been evacuated for medical treatment.

He, said in a statement that the attack took place in the Achin district. It says the incident is under investigation. The President and I have been briefed, the details of this attack are forthcoming. When heroes fall, Americans grieve.

But a U.S. military official confirmed three fatalities - Army Rangers - in the attack.

Three other American soldiers have died there so far this year, including two Army Rangers reportedly gunned down in an friendly fire mishap.

"We would like to express our deepest condolences to the families of the [Afghan Border Police] members affected by this unfortunate incident", a USA military spokesman said in a statement, according to the news service. "Our thoughts and prayers are with the families of these American heroes".

In the past, attacks on Afghan troops by U.S. forces and vice versa have caused mistrust between the two.

Hundreds of US Marines recently arrived in Helmand to take over an advising mission as part of a NATO-led coalition training and assisting local forces.

  • Leroy Wright