In this Part, unless the contrary intention appears:
"evidential material" means:
(a) in respect of an offence against this Act:
(i) any thing with respect to which the offence has been committed or is suspected, on reasonable grounds, to have been committed; or
(ii) any thing as to which there are reasonable grounds for suspecting that it will afford evidence as to the commission of the offence; or
(iii) any thing as to which there are reasonable grounds for suspecting that it is intended to be used for the purpose of committing the offence; and
(b) in respect of a contravention of a civil penalty provision:
(i) any thing with respect to which the civil penalty provision has been contravened or is suspected, on reasonable grounds, of having been contravened; or
(ii) any thing as to which there are reasonable grounds for suspecting that it will afford evidence as to the contravention of the civil penalty provision; or
(iii) any thing as to which there are reasonable grounds for suspecting that it is intended to be used for the purpose of contravening the civil penalty provision.
"occupier" , in relation to premises, includes a person present at the premises who is in apparent control of the premises.
"seize" includes secure against interference.
"thing" includes a substance, and a thing in electronic or magnetic form.