Two NATO contractors killed in Kabul

A suicide car bomb attack targeting a convoy of NATO troops in Afghanistan has left two civilian contractors dead.

A suicide car bomb attack targeting a convoy of NATO troops in Afghanistan has left two people dead. (AAP)

Two civilian contractors working for the NATO force in Afghanistan have been killed in a bomb attack in Kabul, the coalition says.

The statement from the International Security Assistance Force did not give the nationalities of the dead.

The car bomb attack near Kabul's main prison Pol-e-Charkhi targeted a convoy of NATO troops, officials said.

On Monday afternoon, "a suicide car bomber driving a (Toyota) Corolla car full of explosives rammed his vehicle into a foreign forces car in Pol-e-Charkhi area of Kabul", Hashmat Stanekzai, a Kabul police spokesman said.

An AFP photographer at the scene saw burnt and twisted parts of what seemed to be the vehicle carrying the bomb as well as a damaged armoured vehicle.