Preventive detention fails when custody at execution is ignored and no recorded necessity justifies detention despite judicial custody.

A preventive detention order cannot be sustained where, at the time of its execution, the detenu is in judicial custody and the record does not show that the detaining authority was aware of that custody or had considered the compelling necessity to detain despite it. Here, the order was passed while the detenu was on bail but served after surrender and custody; the authority's failure to record awareness or necessity vitiated the detention. Explanations from the executing and sponsoring authorities did not cure the defect, so the order was quashed and release directed if the detenu was not otherwise required.

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Issues: Whether a detention order under the preventive detention law was liable to be quashed when, at the time of its execution, the detenu was in judicial custody and the detaining authority had not shown awareness of that custody or the compelling necessity to execute the order.

Analysis: The detention order was passed when the detenu was on bail, but it was served only after he had surrendered before the Magistrate and was in judicial custody. The settled legal position is that where the detenu is in custody at the time of execution of a preventive detention order, the detaining authority must show awareness of that custody and consider whether detention remains necessary despite the custody. The record did not show such awareness or any recorded basis for compelling necessity. The explanations offered by the executing and sponsoring authorities did not cure this defect.

Conclusion: The detention order was invalid and liable to be quashed. The detenu was entitled to be released forthwith, if not required in any other case.

Final Conclusion: The preventive detention could not be sustained because the mandatory requirement of considering the detenu's judicial custody at the time of execution was not complied with.

Ratio Decidendi: When a detention order is executed against a person already in judicial custody, the detaining authority must be shown to have been aware of that custody and to have applied its mind to the necessity of detention notwithstanding such custody; absence of such awareness vitiates the detention.

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