Removal after expiry of authorization

186(5.2) On an ex parte application, in writing, supported by affidavit, the judge who gave an authorization referred to in subsection (5.1) or any other judge having jurisdiction to give such an authorization may give a further authorization for the covert removal of the electro-magnetic, acoustic, mechanical or other device after the expiry of the original authorization (a) under any terms or conditions that the judge considers advisable in the public interest; and (b) during any specified period of not more than sixty days.