system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5: How is Crime Dealt with on Indian Reservations

Do the police get involved, or do they have their own group of trusted individuals.
gpt
Each tribe will have its own police department, which handles most things. This is important, because on tribal reservation/trust land, city/county/state law enforcement officers will not have jurisdiction.

For felonies, federal law enforcement officials are involved, typically the FBI. The reason for this is that most tribes have misdemeanors proscribed in their tribal legislation, but felonies are just handed at the federal court level.