Turkey will not allow the Syrian town of Azaz just across from the Turkish border fall under the control of Syrian Kurdish fighters, Prime Minister Ahmet Davutoglu said on Monday.

"We will not let Azaz fall. The YPG (the People's Protection Units, a Syrian Kurdish militia) will not be able to cross to the west of the Euphrates (River) and east of Afrin," Davutoglu was quoted as saying by the private NTV television on his plane en route to an official visit to Ukraine.