Hong Kong Regulations

IMMIGRATION (VIETNAMESE MIGRANTS) (DETENTION CENTRES) RULES - RULE 26

Postal articles

(1) Every detainer may, unless the Superintendent, for good cause, decides
otherwise, be permitted to send and receive postal articles, and shall be
supplied by the Superintendent with such paper and writing materials as may be
reasonably required.

(2) No detainee may send or receive postal articles except through the
Superintendent.

(3) Every postal article sent by or intended for a detainee may,
for good cause, be opened and its contents examined by the Superintendent or
some person appointed by him for the purpose. (L.N. 176 of 1992)