Around 1,500 members of Syria's Turkmen minority have fled to the Turkish border to escape renewed fighting in the northwest of the country, a Turkish official said Sunday, according to AFP.

Turkey has expressed concern in recent days over Russian air raids in the area, fearing they are aimed at hitting Syrian opposition fighters and bolstering the regime of President Bashar al-Assad. Meanwhile, Turkmen fighters backed by Turkey have launched their own ground operation in northern Syria to retake territory controlled by" Islamic State" (ISIS) terrorists.