(4) Where, on information given on oath by the authorised officer under subsection (3), a magistrate who is satisfied that there are reasonable grounds to suspect that an offence against this Act has been, is being, or is about to be committed on any premises, being an offence by reason of which the delivery to the Minister of information sought by a notice is endangered, may issue a warrant in writing permitting that authorised officer, to enter the premises, if necessary by force, within 14 days commencing on the date of the issue of the warrant, and search the premises, at any time.