(i) ninety days, where the investigation relates to an offence punishable with death, imprisonment for life or imprisonment for a term of not less than ten years; (ii) sixty days, where the investigation relates to any other offence, and, on the expiry of the said period of ninety days, or sixty days, as the case may be, the accused person shall be released on bail if he is prepared to and does furnish bail, and every person released on bail under this sub- section shall be deemed to be so released under the provisions of Chapter XXXIII for the purposes of that Chapter;] (b) no Magistrate shall authorise detention in any custody under this section unless the accused is produced before him; (c) no Magistrate of the second class, not specially empowered in this behalf by the High Court, shall authorise detention in the custody of the police.1 Explanation I.For the avoidance of doubts, it is hereby declared that, notwithstanding the expiry of the period specified in paragraph (a), the accused shall be detained in custody so long as he does not furnish bail;].2 Explanation II.- If any question arises whether an accused person was produced before the Magistrate as required under paragraph (b), the production of the accused person may be proved by his signature on the order authorising detention.]”