GREAT FALLS – A Box Elder man who trafficked significant amounts of fentanyl into Montana was sentenced Tuesday to 10 years in prison, followed by five years of supervised release, Acting U.S. Attorney Mark Steger Smith said.
Leonard Allen Parisian, 63, pleaded guilty in May 2026 to possession with intent to distribute fentanyl.
Chief U.S. District Judge Brian M. Morris presided.
The government alleged in court documents that Parisian was part of a group trafficking fentanyl on the Rocky Boy’s Indian Reservation between 2023 and 2025.
Law enforcement first learned of Parisian’s involvement with the group in spring 2024. An informant told officers that starting in 2020 he supplied fentanyl pills to Parisian’s son, “Little Al.” When Little Al was sent to prison in 2023, the informant began supplying pills to Parisian, known as “Big Al,” who purchased between 3,000 and 6,000 fentanyl pills at a time. Big Al regularly sent couriers out of state to pick up the fentanyl from the informant. In all, the informant estimated that Big Al purchased between 15,000 and 20,000 fentanyl pills for redistribution in Montana.
Assistant U.S. Attorney Jeffrey K. Starnes prosecuted the case. The FBI and Montana Division of Criminal Investigation conducted the investigation.
