icasualties.org, 260 foreign troopers, 197 of them US personnel, have lost their lives in Afghanistan so far this year.
A total of 566 US-led forces died in Afghanistan in 2011. However, 2010 remains the deadliest year on record for foreign military casualties, with a death toll of 711.
Insecurity continues to rise across Afghanistan, despite the presence of about 130,000 US-led forces in the country.
Washington invaded Afghanistan in 2001 under the pretext of combating terrorism.
At least one US-led soldier has been killed in the volatile eastern Afghanistan, as foreign forces experience their deadliest days in the war-ravaged country.
According to NATO sources the incident occurred on Friday, however its cause is still under investigation.
This is while no further details regarding the nationality of the casualty and the exact location of the incident have been provided.
The high number of military casualties in Afghanistan has intensified opposition in the United States and other NATO member states to the protracted war in the country.
According to the independent website,