A Rosebud, South Dakota, man was sentenced on April 20 to two years and ten months in federal prison after being convicted of two counts of Domestic Assault by an Habitual Offender, according to a statement released by United States Attorney Ron Parsons.
The case highlights the enforcement of federal laws regarding violent crimes committed in Indian country. The Major Crimes Act requires that certain offenses alleged to have occurred on tribal land be prosecuted in federal court rather than state court.
Marlon Oliver, Jr., age 41, received his sentence from U.S. District Judge Eric C. Schulte. In addition to the prison term, Oliver was ordered to serve three years of supervised release and pay a $200 special assessment to the Federal Crime Victims Fund. He pleaded guilty on January 12 after being indicted by a grand jury in March 2025.
According to the prosecution, the convictions stem from incidents that took place at his domestic partner's residence within Todd County on the Rosebud Sioux Indian Reservation. On October 11, 2024, Oliver assaulted his partner during an argument by shoving her. On December 1, he threatened her with a knife after refusing her request for him to leave. At both times he had two prior convictions for domestic assault in Rosebud Sioux Tribal Court.
The case was investigated by Rosebud Sioux Tribe Law Enforcement Services and prosecuted by Supervisory Assistant U.S. Attorney Kirk Albertson. Following sentencing, Oliver was immediately remanded into custody of the U.S. Marshals Service.
The U.S. Attorney for the District of South Dakota is responsible for enforcing federal laws and advancing community safety according to its official website. The office supports initiatives aimed at improving public safety and quality of life according to its official website, covers all of South Dakota according to its official website, and acts as chief federal law enforcement office for its district according to its official website. It handles both criminal prosecutions and civil cases according to its official website as part of broader efforts dating back to 1861 according to its official website.
