If a constable has reasonable grounds to suspect that any person is in possession of a controlled drug the constable may -
(a)search that person, and detain them for the purpose of searching them;
(b)search any vehicle or vessel in which the constable suspects that the drug may be found, and for that purpose require the person in control of the vehicle or vessel to stop it;
(c)seize and detain, for the purposes of proceedings under this Act, anything found in the course of the search which appears to the constable to be evidence of an offence under this Act.
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