3 US soldiers killed, 1 wounded in Afghanistan, according to the Pentagon

US soldiers patrol near the site of a US bombing during an operation against Islamic State (IS) militants in the Achin district of Afghanistan's Nangarhar province on April 15, 2017. Afghan authorities April 15 reported a jump in fatalities from the American military's largest non-nuclear bomb, declaring some 90 Islamic State fighters dead, as US-led forces conducted clean-up operations over their mountain hideouts. Dubbed the "Mother Of All Bombs", the GBU-43/B Massive Ordnance Air Blast was unleashed in combat for the first time April 12, hitting IS positions in a remote area of eastern Nangarhar province. / AFP PHOTO / NOORULLAH SHIRZADA (Photo credit should read NOORULLAH SHIRZADA/AFP/Getty Images)

KABUL, Afghanistan (AP) — Three U.S. soldiers were killed and another was wounded Saturday in eastern Afghanistan, the Pentagon said.

An Afghan official said the deaths and injury stem from an attack by an Afghan soldier, who also died.

In a statement from Washington, the Pentagon didn’t provide details about what led to the deaths of the U.S. soldiers. It said the incident was under investigation.

A spokesman for the provincial governor in Nangarhar province, Attahullah Khogyani, said in a statement that the attack took place in the Achin district.

The Taliban claimed responsibility for the attack. Taliban spokesman Zabihullah Mujahid says in a statement that a Taliban loyalist had infiltrated the Afghan army “just to attack foreign forces.”

In March, an Afghan soldier was killed after he opened fire on foreign forces at a base in Helmand province, wounding three U.S. soldiers.

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