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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So-called legal highs are set to be banned en masse. But what are they, and why is this drastic move necessary?
The new Psychoactive Substances Bill creates a blanket ban on the sale of legal highs, with up to 7 years in jail for selling them.
Friday morning's weather for the east of the region