Militants attacked foreign tourists escorted by an Afghan army convoy in the western province of Herat on Thursday, officials said, with a military spokesman saying at least six people were wounded.

"The convoy was ambushed by the Taliban in Chesht-e-Sharif district. The tourists were on their way to Herat from Bamiyan and Ghor provinces," Jilani Farhad, the spokesman for Herat's governor.