(1) This section applies if the officer in charge of a detention centre or an approved staff member of the detention centre reasonably believes that the security, discipline or good order of the detention centre is likely to be adversely affected by the delivery to, or despatch from, a detainee of any letter or parcel.
(2) Subject to section 23, the officer in charge or the approved staff member may:
(a) open, inspect and read the letter, or open and inspect the parcel, as the case may be; and
(b) impound any money, contraband or any item or matter found in the letter or parcel that, in the opinion of the officer in charge, may adversely affect the security, discipline or good order of the detention centre.
(3) The officer in charge must inform the detainee if any money, contraband or any item or matter of that kind is impounded under paragraph (2)(b).