(1) This section applies if an * authorised officer suspects, on reasonable grounds, that:
(a) a thing constituting * tainted property or * evidential material is in or on a * conveyance; and
(b) it is necessary to exercise a power under subsection (2) in order to prevent the thing from being concealed, lost or destroyed; and
(c) it is necessary to exercise the power without the authority of a * search warrant because the circumstances are serious and urgent.
(2) The officer may:
(a) stop and detain the * conveyance; and
(b) search the conveyance and any container in or on the conveyance, for the thing; and
(c) seize the thing if he or she finds it there.
(3) If, in the course of searching for the thing, the officer finds another thing constituting * tainted property or * evidential material, the officer may seize that thing if he or she suspects, on reasonable grounds, that:
(a) it is necessary to seize it in order to prevent its concealment, loss or destruction; and
(b) it is necessary to seize it without the authority of a * search warrant because the circumstances are serious and urgent.
(4) The officer must exercise his or her powers subject to section 252.