Separate militant bomb attacks and explosions have killed at least three US-led foreign troops and wounded several others in Afghanistan, Press TV reported.
NATO says one soldier died in a bomb attack in the central province of Daykundi.
The provincial Governor Qurban Ali Oruzgani said that the blast occurred in the Kajran district.
Three other foreign soldiers and their translator were wounded.
Two NATO troops were killed separately in southern and eastern Afghanistan.
The deaths push to 83 the number of foreign troops killed in Afghanistan so far in 2011.
NATO's deaths in 2010 stood at 711, making the year the deadliest for foreign forces in Afghanistan since the start of the war.
The rising number of foreign casualties has stoked opposition to the Afghan war in the NATO member states as well as in other countries that have contributed troops to the mission.
NATO has admitted to the rising power of militants in Afghanistan despite the increasing presence of US-led forces in the country, which currently stands at 150,000.
The invasion of Afghanistan took place with the official objective of curbing militancy and bringing peace and stability to the country. Nine years on, however, Afghanistan remains unstable and civilians continue to pay the price.