Shane Tyon, 32, and Donroy Ghost Bear, 43, both pleaded guilty in U.S. District Court to a charge of conspiracy to distribute a controlled substance.

Shane Tyon, 32, and Donroy Ghost Bear, 43, both pleaded guilty in U.S. District Court to a charge of conspiracy to distribute a controlled substance. Both face at least 10 years in prison when sentenced Feb. 3.According to federal court documents, Tyon was a courier and a street-level dealer for the conspiracy between 2001 and 2006. Ghost Bear traveled to Denver to get cocaine and also distributed drugs on the reservation during that same time.Tyon and Ghost Bear are the last of five co-defendants to plead guilty in the case. Dale Ecoffey pleaded guilty to possession with intent to distribute and was sentenced to 70 months in prison. Jeremy Waters pleaded guilty to the same charge and received a 23-month sentence. Vince Lafferty also pleaded guilty to possession and will be sentenced Dec. 23.Conspiracy has a maximum penalty of life in prison and a $4 million fine. Tyon and Ghost Bear are in custody pending sentencing.