When a magistrates' court remands an accused person in custody and he is already detained under a custodial sentence, the period for which he is remanded may be up to 28 clear days.
But the court shall inquire as to the expected date of his release from that detention; and if it appears that it will be before 28 clear days have expired, he shall not be remanded in custody for more than 8 clear days or (if longer) a period ending with that date.
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