(1) The Secretary must cause the physical transfer of a child or young person from a prison to a youth justice custodial centre on a direction of the Adult Parole Board given under section 674.
(2) Subject to subsections (3) and (4), while being transferred from the prison to the youth justice custodial centre, the child or young person is in the legal custody of the youth justice custodial officer having the custody of that child or young person and acting under the direction of the Adult Parole Board and that officer must deliver that child or young person into the custody of the Secretary.
(3) If requested to do so by the Secretary, a police officer may assist the youth justice custodial officer referred to in subsection (2) in the discharge of the officer's duties under that subsection and, in that case, the child or young person being transferred is deemed to be in the legal custody of the police officer.
(4) If a child or young person is removed from a prison by a protective services officer within the meaning of the Victoria Police Act 2013 or a person authorised under section 9A(1B) of the Corrections Act 1986 to carry out transport of a person, the child or young person being removed is deemed to be in the legal custody of the Chief Commissioner of Police.