(1) Before requiring a person to comply with a requirement under section 53 (1) (d) or (e) or section 54, an authorised person must warn the person—
(a) that failure to comply constitutes an offence; and
(b) about the effect of section 55.
(2) It is not an offence for an individual to refuse to answer a question put by an authorised person or provide information or a document to an authorised person under section 53 (1) (d) or (e) or section 54 on the ground that the question, information or document might tend to incriminate the individual, unless the individual was first given the warning in subsection (1) (b).
(3) Nothing in this section prevents an authorised person from obtaining and using evidence given to the authorised person voluntarily by any person.