Police Powers and Responsibilities Act 2000

A police officer has the powers under subsection (2) for 1 or more of the following purposes in relation to an event—

preventing the event becoming an out-of-control event;

if the event is an out-of-control event, stopping the event from continuing or starting in another location;

dispersing persons associated with the event;

minimising the impact of the event on public order or safety;

identifying a person organising the event;

identifying a person committing an offence under division 3.

For the purposes mentioned in subsection (1), a police officer may exercise any 1 or more of the following powers—

stop a vehicle or enter a place without a warrant;

give a person or group of persons a direction to—

stop any conduct; or

immediately leave a place; or

not return to a place within a stated period of not more than 24 hours, unless the person or group resides at the place; or

take any other steps the police officer considers reasonably necessary.