For this subdivision, a child or young person is under restraint if—
(a) the child or young person is under restraint as a result of having been lawfully arrested or detained; or
(b) the child or young person is under restraint in relation to an offence and a police officer suspects on reasonable grounds that—
(i) the child or young person committed the offence; or
(ii) the police officer would be authorised under a law in force in the Territory to arrest the child or young person for the offence; or
(c) the child or young person is in the company of a police officer in connection with the investigation of an offence or possible offence.