(Associated Press) An Afghan wearing a security forces uniform turned his weapon against U.S. troops Saturday, killing three in eastern Afghanistan, officials said, in another apparent attack by a member of the Afghan forces against their international allies.

The shooting took place in Gardez, capital of eastern Paktia province, Gen. Mohammad Zahir Azimi, an Afghan Defense Ministry spokesman, said. The area, near the border with Pakistan, has been a front line in fighting with the Taliban and other militants.

The attack took place inside a base of the Afghan army in the city, according to a security official in Gardez, who spoke on condition of anonymity because he was not authorized to give details while the incident was still under investigation.

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