A suicide car-bomber driving a taxi killed two Afghans in a rare attack on a US military convoy in the capital, Afghan officials said today.
The Taliban claimed responsibility for the attack, the latest in a wave of the worst violence the country has seen in years.
More than 100 people, most of them militants but also including many Afghan police, four foreign soldiers and an American civilian, have been killed since Wednesday.
A US military spokesman said no American soldiers were hurt in the blast, which took place on a main road in the east of the city, where foreign forces have bases and where they have been attacked several times in the past.
"A suicide bomber, the driver of another vehicle and a passer-by have been killed," an Interior Ministry official said.
The Taliban, ousted in late 2001 after refusing to hand over al Qaeda leader Osama bin Laden, have intensified an insurgency to expel foreign troops and defeat the elected government.
The US military, giving the first details of a battle in the southern province of Uruzgan on Friday, said 20 insurgents had been killed. It had already reported the death of a US soldier in the fighting. Seven US soldiers were wounded.