The blast hit the convoy during the morning rush hour in one of the busiest parts of Kabul. Public health officials said eight civilians were killed and at least 25 wounded, with a number of civilian vehicles that were near the convoy destroyed or badly damaged.
A spokesman for the US-led NATO mission, US Navy Capt. Bill Salvin, said three US service members were wounded in the attack. The vehicles, which are designed to withstand big blasts, were able to return to a base under their own power, he said.
In a statement on its Amaq news agency, ISIS said a suicide bomber detonated an explosives-rigged car as the convoy passed near the US embassy.
Although the Afghan branch of ISIS operates largely in the eastern province of Nangarhar, on the border with Pakistan, the movement has also claimed a string of suicide attacks in Kabul.
Witnesses said traces of blood and clothing could be seen on the ground at the blast site.
