Afghan officials say a suicide car bomber has hit a German military convoy, killing at least three civilians and wounding several others.
The Taliban has claimed responsibility for Sunday's attack outside Kunduz city.
A NATO spokesman, Major Tim James, said there were no coalition casualties.
The attack follows a particularly violent day for NATO service members.
NATO says eight of its service members died in Afghanistan Saturday.
The alliance said four died in separate insurgent attacks - three in the south and one in the east. The others died in southern Afghanistan from injuries not related to battle. The Associated Press says they died in a vehicle accident.