CRIMES ACT 1914 SECT 23F

(1)

Subject to subsection (3), if a person is under arrest for a Commonwealth offence, an investigating official must, before starting to question the person, caution the person that he or she does not have to say or do anything, but that anything the person does say or do may be used in evidence.

(2)

The caution must be given in, or translated into, a language in which the person is able to communicate with reasonable fluency, but need not be given in writing unless the person cannot hear adequately.

(3)

Subsections (1) and (2) do not apply so far as another law of the Commonwealth requires the person to answer questions put by, or do things required by, the investigating official.