CHEYENNE, Wyo. (AP) — Two Wyoming men have pleaded guilty in federal court in connection with the death of an Idaho man. Brothers 61-year-old Alan Brown and 54-year-old Vernon Brown, both members of the Northern Arapaho Tribe, appeared Tuesday before U.S. District Judge Scott Skavdahl of Casper.

The brothers pleaded guilty to involuntary manslaughter and aiding and abetting in connection with the 2006 death of 47-year-old Tad Paul Barnson, originally from Idaho Falls, Idaho. Prosecutors charged that Vernon Brown killed Barnson by beating and wounding him and that Alan Brown aided his brother.

The brothers each face a maximum sentence of eight years in prison at sentencing in January. Barnson had been living near Riverton before his death. His remains were found in March on the Wind River Indian Reservation.