The prison officers' union says a gang culture inside an immigration centre in Lincolnshire is putting lives at risk.
Five officers at Morton Hall were injured during riots over the Christmas period. The union's now called on the government to take urgent action. David Hirst reports.
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Former Police Inspector Harry White told the inquests that he was told that fans entering the terraces should "find their own level."
A former police inspector has told the inquests he realised fans entering through an exit gate would head towards already crowded pens.