What are the jurisdictional limits in Indian country?
Primary source
Verbatim text below is from the Electronic Code of Federal Regulations (eCFR), a public-domain U.S. government work. Always verify the current version with the eCFR before relying on it for any legal matter.
Full Text
The Department of the Interior and the Department of Justice must maintain and periodically review and update a memorandum of understanding describing the relationship between the Federal Bureau of Investigation and the Bureau of Indian Affairs in the investigation and prosecution of major crimes in Indian country. Any law enforcement programs performing duties under the authority of 25 U.S.C. 2803 must follow the guidelines in the memorandum of understanding and any local United States Attorney's guidelines for the investigation and prosecution of Federal crimes.
This is legal information, not legal advice. Laws vary by jurisdiction and change frequently. Always verify current law with official sources and consult a licensed attorney in your jurisdiction for advice on your specific situation.