A police officer who arrests a person under this Act or pursuant to a warrant issued under this Act, or who is present at such an arrest, may, if the police officer suspects on reasonable grounds that the person is carrying:
(a) evidential material relating to the Tribunal offence to which the person's custody relates; or
(b) a seizable item;
conduct an ordinary search of the person at or soon after the time of arrest, and seize any such thing found as a result of the search.