The Taliban has claimed responsibility for killing ten people, including foreigners, after the bodies were found in dense forest in northern Afghanistan.
The International Assistance Mission, a Christian charity providing health services to the Afghan people, said on its website Saturday the dead people are "likely" members of its eye camp team, who were returning to Kabul after working in Nuristan.
U.S. officials in Afghanistan say at least two Americans were among the group of eight foreigners and two Afghans killed.
Local officials said six Germans were among those killed in Badakhshan province.
Taliban spokesman Zabihullah Mujahed told the French news agency a patrol confronted the "Christian missionaries and we killed them all."
One Afghan man survived the attack.
The bullet-riddled bodies were discovered Friday.
Some information for this report provided by AP, AFP and Reuters.