Section 458 of the Crimes Act (Finds Committing)  to ensure the person appears before the police or court  to preserve public order  to prevent the continuation or repetition of the offence or the commission of a further offence  for the safety or welfare of members of the public or of the offender  he or she is instructed to make the arrest by a member of the police force  there are reasonable grounds to believe that the person is escaping from legal custody, or assisting another person to escape from legal custody.
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