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Afghanistan officials say Afghan and U.S-led forces killed 22 Taliban militants in southern Afghanistan Saturday.
However, U.S. military officials separately reported that Afghan and coalition forces killed four militants in the same area. It was not immediately clear if the reports referred to the same incidents.
The U.S. statement said the troops were attacked by gunfire and rocket-propelled grenades while patrolling in Zabul province.
Officials say the international forces called in air support after they were attacked.
Authorities say no coalition forces were wounded.
Some information for this report was provided by AFP, AP.