(1) A defence security official who, in accordance with this Part, exercises a power on the basis that the official reasonably believes that a person has committed, or may commit, a criminal offence must inform the person of the offence.
(2) It is sufficient if the person is informed of the substance of the offence, and it is not necessary that this be done in language of a precise or technical nature.
(3) Subsection (1) does not apply if:
(a) the person should, in the circumstances, know the substance of the offence; or
(b) the person's actions make it impracticable for the defence security official to inform the person of the offence.