One U.S. service member was killed and another was wounded after an apparent insider attack in Kabul, Afghanistan, on Saturday.

Initial reports indicate the attacker was a member of the Afghan National Defense and Security Forces, U.S. Forces-Afghanistan said in a statement Saturday morning.

The attacker was also immediately killed by other Afghan partner forces, according to reports received by USFOR-A.

The two U.S. service members were medically evacuated to Bagram Airfield. The wounded service member is undergoing medical treatment and is in stable condition.

U.S. officials added that the incident is under investigation.

The name of the deceased service member will be released 24 hours after their next of kin has been notified.

Additional information will be released as appropriate, officials said.

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This is the latest in a series of apparent insider attacks in Afghanistani in recent months. Just last month, an insider attack where Gen. Scott Miller, the top U.S. commander in Afghanistan, was present, killed a key Afghan general and wounded an American one-star general.

In September, the senior enlisted soldier of 3rd Squadron, 1st Security Force Assistance Brigade was killed in an insider attack. Another soldier from the SFAB was killed in July, also in an insider attack.

According to the Defense Casualty Analysis System, eight U.S. military members, likely not including this latest casualty, have been killed and 95 have been wounded in Afghanistan so far in 2018.