GREAT FALLS – A pair of Box Elder men who tried to rob a house and ended up killing a man were sentenced to prison Wednesday, Acting U.S. Attorney Mark Steger Smith said.
Levi Terrance Olson, 30, who pleaded guilty in May 2026 to attempted robbery and involuntary manslaughter, was sentenced to nine years and three months in prison, followed by three years of supervised release.
Brandon Lee Weaselboy, 36, who pleaded guilty in May 2026 to attempted robbery and involuntary manslaughter, was sentenced to 10 years in prison, followed by three years of supervised release.
Chief U.S. District Judge Brian M. Morris presided.
The government alleged in court documents that early in the morning on July 29, 2024, Olson and Weaselboy, along with Gordon Denny and the eventual victim, planned to steal drugs from a home on the Rocky Boy’s Indian Reservation. When the group reached the house, they found an occupant they did not expect was home. Denny later told investigators it “messed up” the robbery.
At the house, Denny knocked on the door and was taken inside by the unexpected resident. After a brief moment, the other three men kicked in the front door, entered the house and a shootout ensued. In the chaos that followed, Olson and Weaselboy fled from the front of the house, while Denny fled through the back of the house. The victim was shot and was later found dead in the yard. Denny, Olson, and Weaselboy were eventually arrested and interviewed by law enforcement; they admitted to planning the botched robbery that ultimately led to the victim’s death.
Denny was sentenced in June 2026 to two years and seven months in prison for his involvement in the conspiracy.
The U.S. Attorney’s Office prosecuted the case. The FBI and the Chippewa Cree Law Enforcement Services conducted the investigation.
