Bomb kills three coalition soldiers in Afghanistan

U.S. soldiers patrol at the site of a bomb blast in Kabul August 3, 2008.

KABUL (Reuters) - A roadside bomb has killed three soldiers from the U.S.-led coalition force in Afghanistan, the U.S. military said.

Violence has surged to its worst level this year, resulting so far in the killing of some 4,000 people, a third of them civilians, the bloodiest period since U.S.-led troops overthrew the Taliban government in 2001.

The roadside bomb hit a vehicle of the coalition soldiers Wednesday evening in the western part of the country, the U.S. military said in a statement late the same day. It did not give the nationality of the victims.

Resurgent Taliban fighters use suicide and roadside bomb attacks in their attempt to topple the Western-backed government and to cause the withdrawal of foreign forces from the country.

Thursday, unknown gunmen seized two Bangladeshi aid workers near a government building in the heart of Ghazni town which lies to the southwest of Kabul, police said.

No one has claimed responsibility for the abduction.

(Writing by Jonathon Burch; Editing by Valerie Lee)