(1) An interception direction shall cease to have effect at the end of the relevant period, but may be renewed at any time before the end of that period, on an application made under subsection (2).
(2) A judge may renew the interception direction before the expiration of the relevant period, upon an application for the renewal of an interception direction being made by the Attorney General or the Director of Public Prosecutions on behalf of an authorised officer, if satisfied that the renewal of the interception direction is justified.
(3) An application for the renewal of an interception direction under subsection (2) shall be in writing in the prescribed form and shall be accompanied by an affidavit deposing to the circumstances relied on as justifying the renewal of the interception direction.
(4) If at any time before the end of the periods referred to in subsections (1) and (2), it appears to the authorised officer to whom the entry warrant is issued, or a person acting on his or her behalf, that an interception direction is no longer necessary, he or she shall make an application to the Court for the cancellation of the interception direction and the court may cancel the interception direction.
(5) For the purposes of this section “relevant period” means the period of 5 months beginning with the date of the issuance of the interception direction or, in the case of an interception direction that has been renewed, the date of its latest renewal.