"Amid successful actions by Syrian government troops in the eastern part of Syria in late August, a number of field [Daesh] commanders backed by US special services, had been promptly evacuated from Deir ez-Zor to safer regions in order to use their experience in other directions," the source reported to Sputnik.

The press office of the Combined Joint Task Force of Operation Inherent Resolve, which is the Joint Task Force established by the US-led international coalition against the Islamic State, set up by the US Central Command to coordinate military efforts against ISIS, and is composed of US military forces and personnel from over 30 countries with a stated mission to "degrade and destroy" ISIS, called the allegations "false."