NATO: 5 Americans killed in Afghanistan

KABUL, Afghanistan - Seven U.S. service members were killed Saturday in one of the deadliest days for Americans in Afghanistan in recent months and the latest of attacks against international troops since the Taliban announced the start of its spring offensive.

The U.S.-led coalition reported that five international troops were killed by a roadside bomb in southern Afghanistan, and a coalition spokesman, Capt. Luca Carniel, confirmed that all five were American.

The coalition did not disclose the location of the roadside bombing. Javeed Faisal, a spokesman for the governor of Kandahar province, said the coalition patrol hit the bomb in the Maiwand district of the province, the spiritual birthplace of the Taliban.

Later, the coalition reported that a soldier with the Afghan army fired on coalition troops in the west, killing two in the most recent of so-called insider attacks. Such attacks by members of the Afghan security forces against their fellow colleagues or international troops have eroded confidence in the Afghan forces as they work to take over from foreign forces.

Both of the killed were American, according to two U.S. officials who spoke on condition of anonymity to disclose the nationalities ahead of an official announcement.

It was the third time since last summer that seven Americans have been killed on a single day in the war.

On April 6, Afghan extremists killed six Americans, including a young female diplomat, and an Afghan doctor in a pair of attacks in southern Afghanistan. The three U.S. service members, two U.S. civilians, and the doctor were killed when the group was struck by an explosion while traveling to donate books to a school. A seventh American, a civilian, was killed in a separate insurgent attack in the east.

On Aug. 16, 2012, seven American service members were killed in two attacks in Kandahar province. Six were killed when their helicopter was shot down by insurgents. One soldier died in a roadside bomb explosion.