An Afghan soldier turned his weapon on coalition forces at a base in northern Afghanistan, wounding eight people, including seven US soldiers - the second such insider attack in the turbulent Middle Eastern country this month.
Several US military personnel were wounded and evacuated in a violent "incident" Saturday at Camp Shaheen in northern Afghanistan, the NATO-led Resolute Support Mission said.
The attack ended midday after almost six hours of clashes, said Najib Danesh, the interior ministry's chief spokesman.
The Resolute Support mission announced on its Twitter feed that "U.S. soldiers have been wounded" but said there were no US fatalities.
About sixty soldiers were killed on their bases, mostly at night, in the southern province of Kandahar alone around the end of May.
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The diverse locations of the two most recent insider attacks shows the depth of reach now available to insurgents, with one attack taking place in eastern Nangarhar province and the second in northern Afghanistan's Balkh province.
There are about 8,500 US troops and 5,000 North Atlantic Treaty Organisation forces in Afghanistan. The attack has caused injury to four other foreign soldiers. It is also used by allied groups such as the Movement of the Taliban in Pakistan, Lashkar-e-Taiba, the Islamic Movement of Uzbekistan, Shabaab, and by the rival Islamic State. The Taliban claimed responsibility for that attack, which unfolded on June 10 in eastern Afghanistan.
The attack started after a terrorist rammed a truck bomb into front gate of Afghan National Police (ANP) 303 Spin Zar Police Zone at 6.15 a.m., Gen. Tooryalai Abadyani told reporters, Xinhua reported.
United States troops are also at risk in other parts of Afghanistan.
US President Donald Trump is learned to have delegated authority on the number of troops in Afghanistan to Defense Secretary Jim Mattis.