The NATO-led military force in Afghanistan says one of its soldiers has been killed in fighting in the country's volatile south.

A NATO statement issued early Saturday said the service member was killed Friday in a direct-fire attack, a term used to describe an attack where a weapon is fired at a visible target.

The alliance did not provide the service member's nationality, and gave no other details about the attack, including its precise location.

Also on Friday, the U.S. military said Afghan police killed a senior militant commander this week in the central province of Ghazni.

A military statement said Abdul Baki was killed Wednesday while police were conducting a search of his residence.

The statement says Baki was the top militant commander in Ghazni's Andar district.  It said Afghan police discovered 50 voter registration cards in the compound.  Authorities believe the cards were taken from villagers in order to prevent them from voting in the planned August presidential elections.

Some information for this report was provided by AFP and AP.