An officer of Customs or police who arrests a person under section 210, or who is present at such an arrest, may, if the officer suspects on reasonable grounds that the person is carrying:
(a) evidential material in relation to the offence for which the person is arrested or another offence; 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.