(1) The chief officer of an agency:
(a) may, at any time, vary or cancel an authority that was granted by the chief officer of the agency; and
(b) must cancel the authority if the chief officer is satisfied (on a review under section 15KF or otherwise) that use of the assumed identity is no longer necessary.
Note: Section 15KW modifies the effect of this provision if control of the authority is transferred.
(2) The chief officer must give written notice of the variation or cancellation to:
(a) where practicable, the authorised person to whom it relates; and
(b) if the authorised person is an authorised civilian--the authorised person's supervisor.
(3) The notice must state why the authority is varied or cancelled.
(4) The variation or cancellation takes effect:
(a) if the written notice is given to the authorised person and the authorised person is not an authorised civilian--on the day the written notice is given to the authorised person or, if a later day is stated in the notice, on the later day; or
(b) if the authorised person is an authorised civilian and the written notice is given to the authorised person's supervisor--on the day the written notice is given to the authorised person's supervisor or, if a later day is stated in the notice, on the later day; or
(c) in any other case--on the day stated in the notice.
Note 1: The chief officer may delegate functions under this section--see section 15LH.
Note 2: Despite the variation or cancellation of an authority, a person is, in certain circumstances, protected from prosecution for offences even if the person is unaware of the variation or cancellation--see section 15KU.
(5) A variation of an authority is not a legislative instrument.