The US continues to provide Kurdish forces in north-eastern Syria with arms and vehicles, despite the creation of a buffer zone with Turkey along the border, a US defence official said Wednesday (September 18th).

According to the Pentagon, the US supplies the materials to Syrian Democratic Forces (SDF) units to fight the "Islamic State of Iraq and Syria" (ISIS), AFP reported.

"We continue to provide very tailored arms and vehicles to the SDF" for use against ISIS, said Chris Maier, the director of the working group on the fight against the extremists at the Department of Defence.

"We are very transparent about what those supplies are," Maier said.

"We provide monthly to Turkey a report of what those arms and vehicles are."

The international coalition against ISIS has relied on the SDF, an alliance of Arab and Kurdish fighters, to root out and prevent a resurgence of ISIS.

Turkey, with which the US has established a security buffer zone along the Syrian-Turkish border, considers the Kurdish portion of the SDF, called the People's Protection Units (YPG), to be a terrorist group.