Islamic State fighters managed to oust US-backed rebels Syrian Democratic Forces from villages they have lost earlier, pro-rebel sources claimed.
the sources reported fierce battles between the extremist jihadists and the predominantly-Kurdish forces in Ja’bar, a small village on the left bank of Lake Assad in Ar-Raqqa governorate.
Inside the village is the historical Ja’bar castle believed to be built in the 11th century. Another nearby village, Swaidiyah Saghira, was also taken over by the organization.
SDF seized the centuries-old castle last Friday, whereby they found a secret prison used by ISIS to detain their captives.