A suicide bomber has attacked a joint Afghan-NATO patrol in eastern Afghanistan, killing at least 14 people.
NATO says the deaths Monday include three coalition service members and their interpreter. It did not identify the nationalities of the soldier or provide further details on the attack.
Local officials say the bomber rammed a motorcycle into the patrol near a market in the city of Khost. They say the attack also killed six civilians and four police officers.
The Taliban claimed responsibility for the bombing.
Meanwhile, NATO and Afghan officials are investigating a gunbattle Saturday that killed two Americans and three Afghan soldiers. The two sides have given conflicting accounts of that incident, which came days after U.S.-led coalition forces eased restrictions on joint operations with their Afghan allies.