Police officers may ask a person to stop loitering in a public place (in other words, to leave the place) where they believe on reasonable grounds:
· that an offence has been, or is about to be, committed by the person or by others in the vicinity (as more usually happens)
· that a breach of the peace has occurred, is occurring, or is about to occur, in the vicinity of the person or group
· that there is, or is about to be, an obstruction to pedestrians or traffic caused by the presence of the person or of others in the vicinity
· that the safety of a person in the vicinity is in danger.
A person who does not obey a police request to stop loitering commits an offence and may be fined up to $1250 or imprisonment up to three months [Summary Offences Act 1953 s.18]