Northern Territory Numbered Acts Northern Territory Numbered Acts(1) A law enforcement officer to whom a surveillance device warrant has been issued (or another person on the officer's behalf) may, at any time before the expiry of the warrant, apply:
(a) for an extension of the warrant for a period not exceeding 90 days from the day on which it would otherwise expire; or
(b) for a variation of any of the other terms of the warrant.
(2) The application must be made to:
(a) a Judge if the warrant was issued by a Judge; or
(b) a magistrate if the warrant was issued by a magistrate.
(3) Sections 19 and 20 apply (with the necessary changes) to the application as if it were an application for the warrant.
(4) The Judge or magistrate may grant the application, subject to the conditions the Judge or magistrate considers appropriate, if satisfied the matters mentioned in section 21(1) still exist having regard to the matters mentioned in section 21(2).
(5) If the Judge or magistrate grants the application, the Judge or magistrate must endorse the new expiry date or the other varied term on the original warrant.
(6) An application may be made under this section more than once.