A roadside bomb in western Afghanistan killed 17 civilians travelling to a wedding Friday, an Afghan official said.

The civilians killed were on a bus travelling on Friday to a wedding in Pusht Rod district, says Abdul Rahman Zhuwandai, a spokesman for Farah province.

Most of the victims were women and children, he said, and at least 10 others were wounded in the afternoon explosion in what is a relatively peaceful part of the country.

Afghan President Hamid Karzai condemned the attack, saying, "Our people want to live in joy and happiness."

Separately, two service members with the U.S-led military coalition were killed Friday by a roadside bomb in eastern Afghanistan, the coalition said. Their nationalities were not released.

So far this year, 377 U.S. and other foreign troops have been killed in Afghanistan.