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Maximum security prison and a supermax prison are grades of high security level used by prison systems in various countries, which offer an enhanced level of security to prevent prisoners from escaping and from doing harm to other inmates or security guards. *For the United States see Incarceration in the United States#Security levels *For Canada see Correctional Service of Canada#Security classification of offenders *For other prison systems, see Prison#Security levels

See also

*Maximum Security (disambiguation) Category:Prisons {{SIA