Clashes broke out on Saturday between Kurdish forces and Islamic State group fighters near a Syrian prison where dozens of jihadists are still holed up, a war monitor said. An IS assault on the sprawling Ghwayran prison complex near the northeastern Syrian city of Hasakeh on January 20 sparked days of heavy fighting that has left some 260 people dead. The US-backed Syrian Democratic Forces (SDF) announced they had recaptured the prison on Wednesday, but that mop-up operations continued. On Saturday, there were “clashes in the vicinity of the prison between the Syrian Democratic Forces and Kurd…