Two NATO-led soldiers died in a friendly fire incident in southern Afghanistan, and a civilian was killed in an accident with a coalition convoy in the Afghan capital, NATO's International Security Assistance Force said.
An ISAF Joint Command incident assessment team is looking into the troop deaths, which occurred Wednesday. There were no details about what happened, and the precise location of the incident was not available.
ISAF said it plans to "determine the circumstances" of the friendly fire, the term for troops killing or injuring their allies or comrades.
In Kabul, the nation's capital, the civilian was killed and two others were injured when one of the three ISAF vehicles in the convoy "accidentally struck some civilians who were in the road," ISAF said.
"A nearby ISAF patrol provided a security cordon while first aid was administered." The injured were taken to a medical facility, the statement said, adding that no shots were fired by ISAF members.
The ISAF is the NATO-led mission helping the Afghan government in stabilizing the country and establishing security.
Militants in Pakistan's southwestern province of Balochistan torched two tankers carrying fuel for U.S. and NATO troops in Afghanistan, a police official said.
Abdul Aziz Bangulzai said armed militants initially opened fire on tankers and then set them on fire in the Bolan district.
"Four militants on two motorcycles attacked (the) NATO supply and managed to escape from the spot," Bangulzai said.
He said no one was injured, but the tankers were destroyed.
There was no immediate claim of responsibility, but militants in the region have frequently targeted Pakistani security forces and supply trucks headed for Afghanistan in an effort to undermine U.S. and NATO efforts there. More than half of the supplies for NATO forces in Afghanistan travels through Pakistan.
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