(1) It shall be the duty of every Commander to take care that a person under his command when charged with an offence is not detained in custody for more than forty-eight hours after the committal of such person into custody is reported to him, without the charge being investigated, unless investigation within that period seems to him to be impracticable having regard to the public service.
     (2) The case of every person being detained in custody beyond a period of forty-eight hours, and the reasons therefor, shall be reported by the Commander to the next higher authority.
     (3) In reckoning the period of forty-eight hours specified in sub-section (1), Sundays and other public holidays shall be excluded.
     (4) Subject to the provisions of this Act, the Central Government may make rules providing for the manner in which and the period for which any person subject to this Act may be taken into and detained in Security Guard custody, pending the trial by any competent authority for any offence committed by him