"We have received reports about a possible 'blue-on-green' incident in northeast Syria. The incident is under investigation and we will release more details at the appropriate time. The SDF [Syrian Democratic Forces] is a partner in the effort to defeat ISIS [Daesh], and we will continue to support them as they liberate the last stronghold of ISIS in the Middle Euphrates River Valley," Operation Inherent Resolve spokesman Col. Sean Ryan told Sputnik.
The US-led coalition has been operating in Syria against terrorists since 2014 without receiving approval for its operations by either the UN or the Syrian government.
*Daesh (also known as IS/ISIS/ISIL/Islamic State) is a terrorist organization, banned in Russia