New South Wales Consolidated Acts(cf Summary Offences Act 1988 , s 28B)
(1) A police officer may, in a public place or school:(a) take possession of anything that the police officer has reasonable grounds to suspect is a dangerous implement that is unlawfully in a person’s custody, and(b) confiscate the thing.
(2) Any such confiscated thing is to be dealt with in accordance with Division 1 of Part 17.
(3) The power conferred by subsection (1) may be exercised whether or not the police officer requests the person to produce the thing under section 26.