Police Act 1998

A police security officer may give a person within the vicinity of a protected person reasonable directions for the purposes of maintaining or restoring the security of the protected person.

If—

a person refuses or fails to comply with a direction given by a police security officer under subsection (1); or

a police security officer suspects on reasonable grounds that a person has committed, is committing, or is about to commit, an offence within the vicinity of a protected person, the officer may do 1 or more of the following:

direct the person to provide—

the person's name and address; and

evidence of the person's identity;

cause the person to be removed to some place away from the protected person;

cause the person to be detained and handed over into the custody of a police officer as soon as reasonably practicable.

Reasonable force may be used for the purpose of taking action under subsection (2)(d) or (e).