Kabul: A suicide bomber in a vehicle attacked a foreign military convoy west of the Afghan capital on Saturday, killing himself, but no troops or civilians were killed, a provincial police chief said.

A spokesman for the Nato-led force in Kabul could not immediately confirm the blast.

The attack happened a day after US-led coalition troops killed several militants in clashes and airstrikes in the neighbouring Kapisa province to the north.

The coalition said its troops targeted insurgents in Kapisa's Nijrab district, sparking a clash in which militants retaliated.