A suicide car bomber targeting an army convoy killed three people in Afghanistan, witnesses said.

The Afghan army convoy was passing along a road in Ghazni town which lies southwest of capital Kabul, they said.

Two civilians and one soldier were killed in the attack, which also wounded five more soldiers, they added.

There was no immediate claim of responsibility for the blast, but Taliban insurgents have been behind many such attacks in recent years.

Ousted from power in 2001, the militants largely rely on suicide bombings against the Afghan government and foreign troops as part of their insurgency.