BBC: Two Germans kidnapped near Kabul in Afghanistan this week have been killed, a spokesman for the Taleban has said.
The spokesman, Qari Yousuf Ahmadi, said the Taleban's demand that Germany withdraw its 3,000 troops in Afghanistan had been ignored.
Afghan and German officials say they have no confirmation of the killings and are seeking evidence.
The Taleban has also threatened to kill at least 18 hostages from South Korea, captured separately on Thursday. Taleban 'kill captured Germans' (more)
Mark Alexander
