According to Amaq News, ISIS sleeper cells have assassinated a U.S. officer who worked at Incirlik Airbase in southern Turkey.
The full Amaq News transcript of the alleged incident, which purportedly happened a few days ago, can be read here:
The U.S. State Department is yet to address the claim which cannot be independently verified by Al-Masdar News.
Turkey has allowed the U.S. to conduct air raids on ISIS from its NATO bases since 2015; this appears to be the motive of the alleged assassination.
Three U.S. soldiers have previously been killed by ISIS, although during frontline combat:
1: On March 19 2015, 27-year-old Marine Staff Sgt. Louis F. Cardin was killed by ISIS rocket fire near Makhmour in northern Iraq.
2: On Oct. 22 2015, 39-year-old Army Master Sgt. Josh Wheeler was killed in a raid in northern Iraq that rescued 70 Iraqi hostages taken by ISIS extremists.
3: On May 3 2016, 31-year-old Navy Seal Charles Keating was killed by ISIS gunfire as jihadist forces attempted to capture the Iraqi town of Telskof from the Peshmerga.