Afghan officials say gunmen in southern Afghanistan have killed a member of the country's parliament.

Authorities say Habibullah Jan was shot dead late Friday in the Zhari district of Kandahar province.

In a separate incident Friday, Afghan police say 10 Taliban militants planting a roadside bomb in Helmand province were killed when it exploded prematurely.

Afghan officials also said a U.S.-led coalition air strike on Friday killed 22 civilians in a remote district, Vanth Waigal, of Nuristan province, near the Pakistani border. 

The U.S.-led coalition confirmed the air raid but said militants - not civilians - were killed. The coalition said the strike was in response to a militant attack on a base.

Afghan President Hamid Karzai has called on foreign troops to minimize civilian casualties.  The United Nations says close to 700 civilians have been killed this year in crossfire between Taliban insurgents and foreign forces.

Also Friday, Afghan police say a roadside bomb planted by Taliban militants struck a police vehicle in central Ghazni province.  At least two officers were killed and several others wounded. 

Some information for this report was provided by AFP and.