ROSEBUD, S.D. – A Montana man has been sentenced to federal prison for assaulting a correctional officer at a detention facility on the Rosebud Sioux Reservation.
Federal prosecutors say 31-year-old Michael Diserly of Poplar, Montana, was sentenced to one year in prison after pleading guilty to assaulting, resisting, and impeding a federal officer.
The incident occurred in July 2022 while Diserly was being held at the Rosebud Sioux Tribe Adult Correctional Facility. According to court records, Diserly punched a correctional officer in the face and struggled with other officers before being restrained.
In addition to the prison sentence, a federal judge ordered Diserly to serve two years of supervised release and pay a special assessment to the Federal Crime Victims Fund.
The case was investigated by Rosebud Sioux Tribe Law Enforcement Services and prosecuted by the U.S. Attorney’s Office for South Dakota.
Diserly was remanded to the custody of the U.S. Marshals Service following sentencing.









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