The Taleban says it has killed four foreigners kidnapped at the weekend in southern Afghanistan.
A spokesman for the group, Qari Mohammad Yousuf, said the bodies of three Albanians and a German had been dumped "between Helmand and Kandahar".
The authorities have not confirmed the claim. The company the four foreigners worked for says they were all Albanian.
Four Afghan nationals seized at gunpoint along with the foreigners were freed on Monday.
There have been several incidents in recent months involving the kidnapping of foreigners in Afghanistan.