Syrian Democratic Forces (SDF) liberated two more towns during the ongoing offensive to liberate Raqqa, killing 49 Islamic State (ISIS) militants in the process. The U.S.-led coalition against ISIS supported the SDF with airstrikes in both towns. Clashes between the SDF and ISIS are ongoing in the town of Wadi al-Jalab. Fierce clashes between ISIS militants and SDF fighters on Wednesday resulted in the SDF also securing the villages of al-Hatash, Om al-Tenak, Bir Jarbe, and Jarwa. The SDF announced on Thursday (April 13) the beginning of the fourth phase of the offensive to oust ISIS from the Syrian city of Raqqa and will concentrate on liberating northern Raqqa and Jalab Valley from the militant group.