Press TV reports.
Taliban militants launched a fresh attack on US forces on Sunday as American troops were on their way from Torkham border crossing between Pakistan and Afghanistan to Jalalabad in Nangarhar.
A gunfight erupted between the two sides. The fighting that lasted for almost an hour also left three civilians dead.
US forces have not yet commented on the assault.
US-led troops and Afghan forces are falling prey to Taliban attacks on an almost daily basis.
The United States invaded Afghanistan in 2001 under the pretext of combating terrorism. The offensive removed the Taliban from power, but insecurity continues to rise across the country despite the presence thousands US-led troops.
The US-led war in Afghanistan, which has caused record-high civilian and military casualties, has become the longest military conflict in US history.
According to the website icasualties.org, a total of 396 US-led troops have lost their lives in Afghanistan so far this year.
The escalating human cost of the war is putting a great deal of pressure on NATO member states to withdraw their troops.
The Taliban say they have killed at least 10 American soldiers in an attack on a US convoy in Afghanistan’s eastern Nangarhar Province,