An authorised psychiatrist may revoke a leave of absence granted to a person by written notice and require the person to return to the designated mental health service if the authorised psychiatrist is satisfied that—
(a) revocation of the leave of absence is necessary to prevent—
(i) serious deterioration in the person's mental or physical health; or
(ii) serious harm to the person or to another person; or
(b) the person has failed to comply with a condition to which the leave of absence is subject; or
(c) the purpose for the leave of absence no longer exists.