A 2010 federal appellate court had already decided the Osage Nation’s reservation was disestablished, the court said in its decision to uphold a Barnsdall man's conviction in a 2018 murder case.

OKLAHOMA CITY (AP) — Questions over whether the Osage Nation reservation in northern Oklahoma still exists will next be answered by the state's Court of Criminal Appeals. Osage County District ...

Congress disestablished the Osage Nation’s northern Oklahoma reservation, the state’s highest criminal court ruled Thursday. The closely watched decision means Oklahoma can continue to ...

Oral arguments are set for Monday in a federal case that pits the Osage Nation against non-Indians in Osage County and against the state of Oklahoma.

Instead, the nation believes that the United States Supreme Court's decision back in 2020, with the McGirt vs. Oklahoma case, which reaffirmed the reservation status for other Oklahoma tribes in ...

A U.S. federal court ruled in favor of the Osage Nation in Oklahoma after it sued Enel Group for violating its tribal sovereignty. Enel was ordered to remove a massive 84-turbine wind farm that it ...

Set in early 20th-century Oklahoma on the Osage Indian Reservation, Martin Scorsese’s film “Killers of the Flower Moon” highlights how newly discovered oil became a curse for Osage who held ...

Osage woman Rita Smith and her servant Nettie Brookshire are seen at a summer retreat in a photo from "Killers of the Flower Moon: Adapted for Young Readers," by David Grann. In the new young ...

"Killers of the Flower Moon" is directed by Martin Scorsese, this crime drama film is based on the true story of the Osage Indian murders in the 1920s. Filming took place in Osage County, Oklahoma.

By Kaitlyn Schwanemann, CNN (CNN) — The Osage Ballet overlooks a creek in Pawhuska, Oklahoma, on the Osage Indian reservation. Before class, students can be found warming up with plies and ...