Correctional institutions occupy a critical but insufficiently theorised position within Nigeria’s national-security architecture. Traditionally conceived primarily as institutions for punishment, incapacitation and the containment of offenders, contemporary correctional systems increasingly perform functions involving secure custody, risk and needs assessment, rehabilitation, behavioural transformation, non-custodial measures and reintegration. This article develops Nura Umar Manya Manya’s Correctional Security and Reintegrative Philosophy (CSRP) as an original conceptual synthesis derived from his scholarship on prison reform, national security, custodial institutions, drug abuse, rehabilitation and correctional administration. The paper argues that correctional institutions should be reconceptualised as strategic internal-security institutions because failures in custodial security, rehabilitation and reintegration can generate consequences extending beyond prison boundaries into communities and the wider national-security environment. The study adopts a qualitative documentary research design and thematic analysis of relevant correctional scholarship, Nigerian legal and policy instruments, United Nations standards and criminological and security literature. Systems Theory, Rehabilitation Theory and the Risk-Needs-Responsivity framework provide the theoretical foundation. The paper proposes the Manya Manya Correctional Security and Reintegration Model (MCSRM), consisting of seven interconnected pillars: secure custody, correctional intelligence, risk and needs assessment, rehabilitation, behavioural transformation, reintegration and whole-of-government security cooperation. The paper concludes that sustainable security requires an integrated correctional continuum in which custody protects society in the short term, while rehabilitation and reintegration reduce future criminal risk.
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