RIVERTON, Wyo. (AP) — The 10th Circuit Court of Appeals has declined to reconsider its ruling that the city of Riverton in central Wyoming is not within the boundaries of the Wind River Indian Reservation.

A panel of three judges ruled 2-1 in February against an Environmental Protection Agency opinion that said Riverton was on the reservation.

That prompted the Eastern Shoshone and Northern Arapaho tribes to ask for a new hearing before the full 10th Circuit.

The denial of the rehearing was announced Tuesday.

The only recourse for the tribes now is to ask the U.S. Supreme Court to hear the case.

The dispute centers on whether a 1905 agreement between the tribes and federal government to allow sale of reservation land to non-Indians actually changed the reservation boundaries.

More From K2 Radio