Seven soldiers from the NATO-led International Security Assistance Force (ISAF) were killed in a roadside bombing in southern Afghanistan, the military said.
‘Seven International Security Assistance Force service members died following an improvised explosive device attack in southern Afghanistan today,’ ISAF said in a statement.
A coalition official speaking on condition of anonymity said the deaths occurred in Shorabak district, Kandahar province, and came in two successive blasts in the same location.
The bombing caused the highest death toll for ISAF in a single incident since 27 April, when nine Americans - eight troops and a contractor - were killed by an Afghan officer who opened fire at a Kabul military training centre.
At least 199 foreign troops have now been killed in Afghanistan this year.
Earlier Thursday, a NATO helicopter crashed in a mountainous area of eastern Afghanistan, killing one soldier.
There are around 130,000 ISAF service personnel in the war-torn country, around 90,000 of whom are from the US.