U.S.-led coalition troops clashed with a group of Taliban fighters in northern Afghanistan, killing six militants, while four militants were killed in a battle in the south, officials said.
President Hamid Karzai, meanwhile, sacked two Afghan army officers Sunday, following a joint Afghan-coalition operation in the country's west that he said killed at least 89 civilians.
Violence has spiked around Afghanistan in recent weeks, and the Taliban have stepped up attacks against international troops.
In the north, coalition troops returned fire after being attacked by militants while on patrol in the volatile Tagab valley of Kapisa province, said coalition spokesman 1st Lt. Nathan Perry.
Rahimullah Safi, the province's deputy governor, said six militants were killed in the clash, while Perry said "multiple militants" were killed.
agab is close to where militants killed 10 French troops Tuesday in the deadliest ground attack on foreign troops since the Taliban were ousted from power in 2001.
In southern Helmand province Sunday, four militants were killed by NATO aircraft and Afghan troops, the military alliance said in a statement.
Troops fired on the militants after they attacked an Afghan army unit that was guarding a satellite station in Helmand's Musa Qala district, the statement said.
In the eastern Kunar province, a civilian Mi-8 supply helicopter contracted by NATO-led troops crashed shortly after takeoff Sunday, killing one person on board and wounding three others, the alliance said in a statement. The helicopter was leaving a NATO base in the area when it crashed.
The alliance did not release the nationalities of the civilians or say what caused the crash.
In the western Afghan city of Farah, a suicide attacker wearing a burqa - the traditional women's all-encompassing dress - detonated his explosives near a convoy of Afghan soldiers , wounding two soldiers and two civilians, said provincial police chief Khalil Rahmani.
Separately, three civilians were killed and seven others wounded when their vehicle was hit Sunday by a roadside bomb in the eastern Khost province, said provincial police chief Abdul Qayum Bakizoy.
Bakizoy blamed "enemies of Afghanistan" for planting the bomb.
More than 3,400 people - mostly militants - have been killed in insurgency-related violence this year, according to figures from Western and Afghan officials.
Last week the U.S. military suffered its 101st death, when Sgt. 1st Class David J. Todd Jr., 36, died in a gunfire attack. Last year U.S. troops suffered a record 111 deaths.
This year will likely be the deadliest for international troops since the 2001 invasion. Some 188 international soldiers, including the 101 Americans, have died in Afghanistan this year, according to an Associated Press count. That pace should far surpass the record 222 international troop deaths in 2007, AP reported.