If a detainee applies to deliver documents or drawings (excluding letters) prepared by the detainee to another person, the director of the immigration detention center, etc. may, with respect to that delivery, conduct inspections and take other measures in the same manner as for letters sent by detainees.
Read this with the articles around it
detaineemachine translation
「被収容者」
A person held in an immigration detention center or other immigration detention facility.
Defined inArticle 55-4, paragraph (1)· applies only in this chapter and in Article 71-6
director of an immigration detention center, etc.machine translation
「入国者収容所長等」
The director of an immigration detention center or the director of a regional immigration services bureau.
Short name set inArticle 55-5, paragraph (1)· applies only in this chapter and in Chapter 8