Syrian Kurds Keep Fleeing Syrians Out of Annexed Syrian Territory!

Just the facts, bearing in mind I don't cheer for terrorists , nor do I support the annexation of Syrian territory-  whether it's done by Israel or by PKK/YPG KurdsReuters- Civilians fleeing an Islamic State offensive in northwestern Syria have been prevented by Syrian Kurdish authorities from entering areas under their control - Civilians have been fleeing fighting between Syrian rebels and the Islamic State group that advanced into the opposition-held town of Marea- The United Nations has expressed concern about an estimated 8,000 Syrians trapped by fighting in northern Aleppo.- "However, an estimated 7,000 civilians still remain inside and unable to leave due to restrictions imposed by Kurdish authorities"  Link  - Civilians fleeing an ISIS offensive in northwestern Syria have been prevented by Syrian Kurdish authorities from entering areas under their control- “However, an estimated 7,000 civilians still remain inside and unable to leave due to restrictions imposed by Kurdish authorities,”There are NO kurdish authorities in Syria.Or is the UN accepting the illegal annexation of Syria by Kurdish terrorists?