Removal after expiry of warrant

492.1(5) On ex parte application in writing supported by affidavit, the justice who issued a warrant under subsection (1) or a further warrant under subsection (3) or any other justice having jurisdiction to issue such warrants may authorize that the tracking device be covertly removed after the expiry of the warrant (a) under any terms or conditions that the justice considers advisable in the public interest; and (b) during any specified period of not more than sixty days.