Officers from special prison service riot units across the country were called in to deal with a riot at Maidstone incident tonight, in a system known as Operation Tornado.
Up to 180 inmates were said to be involved. Iain McBride reports from the scene.
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An off-duty policeman, out with his children and his children's friends at a cinema, has been praised for tackling a young man with a knife.
Tuesday's weather for the west of the region
Tuesday's weather for the east of the region