Afghan officials say a suicide bomber has struck near a convoy of foreign forces in northern Afghanistan, killing one civilian and injuring at least six others.
The attack Saturday in the city of Mazar-i-Sharif, was the fourth suicide bombing in Afghanistan in two days.
Earlier Saturday in western Kabul, officials say four civilians were killed when a suicide bomber rammed his explosives-laden car into a line of NATO vehicles.
Kabul police say U.S. troops responding to the attack opened fire, mistakenly killing one civilian and wounding another. Witnesses say civilians in the area responded angrily. A U.S. military spokesman says a soldier's weapon may have fired accidentally, and that the incident is being investigated.
In other violence, officials say a U.S.-led coalition soldier was killed in central Uruzgan province when a rocket-propelled grenade struck his vehicle.
The U.S.-led coalition and Afghan forces have been fighting Taleban militants since the extremist Islamist group was driven from power in 2001. The fight has intensified over the past year. Humanitarian organizations say civilians have been hit hardest by the violence.
On Friday, a suicide car bomber attacked a NATO convoy in Uruzgan province. Five Afghan children, four adult civilians and a Dutch soldier were killed. Three Dutch soldiers and several Afghan civilians were wounded.
Separately Friday, a suicide bomber attacked a foreign convoy in the southern city of Kandahar, wounding five civilians.
Some information for this report was provided by AFP, AP and Reuters.