Kurdish-led forces in northeast Syria on Friday found the bodies of 18 fellow fighters inside a prison that the Islamic State group attacked last week, a war monitor reported. The US-backed Syrian Democratic Forces said Wednesday that they had recaptured the sprawling complex in the city of Hasakeh following a January 20 IS jailbreak attempt that sparked days of clashes inside the facility and in surrounding areas. But mop-up operations are still underway in the Ghwayran prison where Kurdish forces say dozens of militants remain holed up. During a sweep on Friday, the SDF backed by Kurdish int…