Imprisoned members of the Islamic State group rioted and took control of a prison in northeast Syria for several hours until Kurdish-led authorities negotiated an end to the unrest Sunday.
The riot began Saturday at a prison in the city of Hassakeh, one of the largest facilities where IS members are held, and control was reestablished Sunday evening, said Kino Gabriel, a spokesman for the U.S.-backed Syrian Democratic Forces.
A two-day riot and takeover of the same prison in late March allowed four extremists to escape, although they were caught a day later. It was one of the most serious uprisings by the prisoners since IS was defeated a year ago when the SDF seized control of the last sliver of land controlled by the extremists in eastern Syria.