Two U.S. helicopters on Monday attacked a Syrian army checkpoint in northeastern Syria near the Kurdish-held city of Qamishli, killing one soldier and injuring two others, state media said.
The incident happened shortly after a U.S. patrol was prevented from passing by an army checkpoint in the area, state media said.
Northeastern Syria is mainly under the control of U.S-backed Syrian Democratic Forces who are spearheaded by Kurdish fighters, but Syrian army forces are deployed in certain locations under agreements with the Kurds.