12. If, in the application of section 10 or 11, it appears that an offence has been committed against this act or any other act the administration of which is entrusted to the Superintendent, he, his assistant, or the person designated by him may seize any pertinent document so that the Superintendent may ensure custody of it, provided that he leaves a copy with the person from whom he seizes such document.
The Superintendent shall not keep the document in question for more than ninety days unless a complaint is made before the expiry of that period; the chief judge or assistant chief judge of the Court of the Sessions of the Peace may however order that the period of custody be reduced or extended for another period of ninety days.