(1) Whenever, after the conviction of a prisoner, any doubt or question arises as to his or her guilt, or any mitigating circumstance in the case, or any portion of the evidence therein, the Executive, on the petition of the prisoner, or some person on his or her behalf, representing such doubt or question, or a judge of the Supreme Court of his or her own motion, may direct any magistrate to, and such magistrate may, summon and examine on oath all persons likely to give material information on the matter suggested.
(2) The attendance of every person so summoned may be enforced, and his or her examination compelled, and any false statement wilfully made by him or her shall be punishable in like manner as if he or she had been summoned by, or duly sworn and examined before, the same magistrate, in a case lawfully pending before him or her.
(3) Where on such inquiry the character of any person who was a witness on the trial is affected thereby, the magistrate shall allow such person to be present, and to examine any witness produced before such magistrate.
(4) Every deposition taken under this section shall be stated in the commencement to have been so taken, and in reference to what case, and in pursuance of whose direction, mentioning the date thereof, and shall be transmitted by the magistrate, before whom the same was taken, as soon as shall be practicable, to the Executive if the inquiry was directed by him or her, or to the judge directing the inquiry, and the matter shall be disposed of, as to the Executive, on the report of such judge, or otherwise, shall appear to be just.