Popalzai reported from Kabul , Carter from Atlanta . An Afghan policeman kills three fellow officers , an official in Nimruz province says . Afghan official says three soldiers killed in Helmand province were Afghan . The shooting occurs at a base shared by U.S. Marines and Defense Department troops , the official says . night , a man in an Afghan security force uniform kills three U.S. soldiers .
An Afghan policeman kills three fellow officers , an official in Nimruz province says . Afghan official says three soldiers killed in Helmand province were Afghan . The shooting occurs at a base shared by U.S. Marines and Defense Department troops , the official says . night , a man in an Afghan security force uniform kills three U.S. soldiers .