25 CFR §11.1004

1. (a)A minor alleged to be a juvenile offender may be detained, pending a court hearing, in the following places:
   1. (1)A foster care facility approved by the tribe;
   2. (2)A detention home approved by the tribe; or
   3. (3)A private family home approved by the tribe.
2. (b)A minor who is 16 years of age or older may be detained in a jail facility used for the detention of adults only if:
   1. (1)A facility in paragraph (a) of this section is not available or would not assure adequate supervision of the minor;
   2. (2)The minor is housed in a separate room from the detained adults; and
   3. (3)Routine inspection of the room where the minor is housed is conducted every 30 minutes to assure his or her safety and welfare.