Afghanistan's Interior Ministry says a German national and his Afghan translator who were abducted in southwestern Afghanistan have been freed.

The two men disappeared last week. It is not clear why they were kidnapped. German officials say the man was not working for the German government, a relief agency or the media.

Elsewhere, officials in southern Afghanistan say a suicide bomber killed at least nine people, including police officers, at a checkpoint in the town of Spin Boldak Thursday.

In a separate incident, NATO says a roadside bomb hit a convoy, killing one soldier and wounding two others. The force has not released the nationalities of the victims.

On Wednesday, six Canadian soldiers and an Afghan interpreter were killed by a roadside bomb, also in southern Afghanistan.

Some information for this report was provided by AFP and Reuters.