Commonwealth Consolidated Acts Commonwealth Consolidated Acts(1) A constable may, without warrant, arrest a person for an offence (other than a terrorism offence and an offence against section 80.2C of the Criminal Code ) if the constable believes on reasonable grounds that:
(a) the person has committed or is committing the offence; and
(b) proceedings by summons against the person would not achieve one or more of the following purposes:
(i) ensuring the appearance of the person before a court in respect of the offence;
(ii) preventing a repetition or continuation of the offence or the commission of another offence;
(iii) preventing the concealment, loss or destruction of evidence relating to the offence;
(iv) preventing harassment of, or interference with, a person who may be required to give evidence in proceedings in respect of the offence;
(v) preventing the fabrication of evidence in respect of the offence;
(vi) preserving the safety or welfare of the person.
(2) If:
(a) a person has been arrested for an offence under subsection (1); and
(b) before the person is charged with the offence, the constable in charge of the investigation ceases to believe on reasonable grounds:
(i) that the person committed the offence; or
(ii) that holding the person in custody is necessary to achieve a purpose referred to in paragraph (1)(b);
the person must be released.
(3) A constable may, without warrant, arrest a person whom he or she believes on reasonable grounds has escaped from lawful custody to which the person is still liable in respect of an offence.