The number of fatalities among NATO and allied forces has surpassed 3,000 since the US-led war in Afghanistan started in 2001, according to an independent website tracking the coalition's military fatalities, dpa reported.
The website icasualties.org says 3,000 soldiers - of whom almost two-thirds were American - have been killed in the Afghan war and related conflicts elsewhere in the world since 2001.
The most recent casualties, four NATO soldiers killed on Saturday, had not yet been included in the figures.
According to the website, 2,907 soldiers had been killed in Afghanistan, while the rest were killed elsewhere during the US-led Operation Enduring Freedom (OEF).
OEF is an official term for the global war on terror, which includes the decade-long Afghan war and a number of other military activities elsewhere in the world following the September 11, 2001 attacks on the United States.
In Afghanistan, the US and NATO allies have been fighting the home-grown Taliban insurgency since the US ousted their radical Islamic regime from Kabul in 2001.
This year alone, more then 150 soldiers have been killed in Afghanistan, according to the website. Last year, 566 died.
The US has lost 1,968 soldiers in the war, the figures show. The United Kingdom trails second with 412 fatalities while Canada is in third place with 158 fatalities among soldiers. Since 2011, Canada has only had trainers, not combat troops, stationed in Afghanistan.
The southern Afghan province of Helmand, which is the focus of poppy cultivation, has been the most deadly province for the military coalition, with a total of 851 fatalities.
Roadside bombings, through improvised explosive devices (IEDs), have been the number one killer among international forces, causing almost half of total casualties.
On Saturday, four NATO service members were killed in three separate incidents in southern Afghanistan, the alliance said, without specifying where exactly the incidents took place.
Two died in an insurgent attack and one in a roadside bomb, while the fourth died of "non-battle related injury," NATO said in a statement. It did not disclose the nationality of the deceased.