25 C.F.R. § 15.3 Will the Secretary probate all the property in Indian estates?
Title 25 - Indians
(a) No. We will probate only the trust or restricted property in the estate of an Indian decedent. (b) We will not probate: (1) Real or personal property in an estate of an Indian decedent that is not trust or restricted property; (2) Restricted property derived from allotments in the estates of members of the Five Civilized Tribes (Cherokee, Choctaw, Chickasaw, Creek and Seminole) in Oklahoma; and (3) Restricted interests derived from allotments made to Osage Indians in Oklahoma (Osage Nation) and Osage headright interests. (c) We will probate the estate of a deceased member of the Five Civilized Tribes or Osage Nation who owns an interest in land derived from an individual Indian other than the Five Civilized Tribes or Osage Nation.
Title 25: Indians
PART 15—PROBATE OF INDIAN ESTATES, EXCEPT FOR MEMBERS OF THE FIVE CIVILIZED TRIBES
Subpart A—Introduction
§ 15.3 Will the Secretary probate all the property in Indian estates?

