New South Wales Consolidated Acts

LAW ENFORCEMENT (POWERS AND RESPONSIBILITIES) ACT 2002 - SECT 22

22 Power to seize and detain dangerous articles on premises

(cf Crimes Act 1900 , s 357)
A police officer who is lawfully on any premises may seize and detain any dangerous article that the police officer finds on the premises, if the police officer suspects on reasonable grounds that the dangerous article is being or was used in or in connection with the commission of a relevant offence.

Note--: Premises include vessels, vehicles, aircraft and other places.