Turkish forces and their Syrian rebel allies began the Aug. 24 offensive by seizing Jarablus, a Syrian frontier town, from Islamic State, before turning their sights on what the army said were Kurdish YPG positions.
The Turkish military said its warplanes had bombed three sites around the Syrian settlements of Arab Ezza and al-Ghundura, west of Jarablus, roughly in the centre of the 90-km stretch of territory that Turkey says it aims to clear.
President Tayyip Erdogan said the Turkish operation dubbed "Euphrates Shield" had been successful in clearing Islamic State and Kurdish YPG from a 400-sq-km area.
He denied claims that the YPG, which Ankara calls a terrorist group, had withdrawn to a Kurdish-controlled canton to the east of the Euphrates river, a key Turkish demand.
Turkey has said it has no plans to stay in Syria and simply aims to protect its frontier from the militant group and the Kurdish YPG militia, which it sees as an extension of the outlawed Kurdish PKK group fighting an insurgency on Turkish soil.
The United States has voiced concerns about Turkish strikes on Kurdish-aligned groups that Washington has backed in its battle against Islamic State. Germany said it did not want to see a lasting Turkish presence in an already tangled conflict.