A critical report on HMP Ranby was released following an 11-day inspection by HM Inspectorate of Prisons. It found that two prisoners died through "self-inflicted deaths" last year, and a further two have died in a similar way since the unannounced inspection in March.
Conditions in part of the prison, which holds more than 1,000 men, were dirty, prisoners were found to have climbed netting in a bid to force a transfer to another facility and nearly half the population said they had felt unsafe having been victimised or intimidated, findings showed.
Evidence was found of an increasing number of incidences of self-harm at the category C training prison, and the availability of legal highs was also found to have increased.
Chief Inspector of Prisons Nick Hardwick said the report showed a prison "in crisis".
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