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Department of Justice

U.S. Attorney's Office
District of South Dakota
Alison J. Ramsdell, United States Attorney
For Immediate Release
Wednesday, May 25, 2022

Pine Ridge Man Found Guilty of Eight Federal Charges

United States Attorney Alison J. Ramsdell announced that Isaac Roubideaux, age 30, of Pine Ridge, South Dakota, was found guilty of Discharge and Brandishing a Firearm During a Crime of Violence, Assault with a Dangerous Weapon, Assault Resulting in Serious Bodily Injury, three charges of Failure to Register as a Sex Offender, and two charges of Possession of a Firearm by a Prohibited Person following a federal jury trial in Rapid City, South Dakota.  The verdict was returned on May 20, 2022.

The charges carry a maximum penalty of up to life in federal prison and/or a $250,000 fine on each charge, up to a lifetime of supervised release, and a $100 special assessment to the Federal Crime Victims Fund on each charge.  Restitution may also be ordered.

Roubideaux was indicted by a federal grand jury in December 2021.  The assault and firearms charges relate to Roubideaux shooting another man in the back on November 18, 2021, resulting in the victim suffering permanent paralysis below his waistline.  

The case was investigated by the Oglala Sioux Tribe Department of Public Safety Criminal Investigations Division, the U.S. Marshals Service, and the Bureau of Alcohol, Tobacco, Firearms, and Explosives. Assistant U.S. Attorneys Megan Poppen and Heather Sazama prosecuted the case.

A presentence investigation was ordered and a sentencing date will be set.  The defendant was remanded to the custody of the U.S. Marshals Service.

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