Browning man admits murder and kidnapping on Blackfeet Indian Reservation | USAO-MT

GREAT FALLS – A Browning man today admitted to murdering a man and holding a woman hostage at knifepoint on the Blackfoot Indian Reservation, Acting U.S. Attorney Leif Johnson said.

Jason Avery Mattson, 30, pleaded guilty to second degree murder and kidnapping as charged in an indictment. Mattson faces a maximum of life in prison, a $250,000 fine and five years of probation.

Chief U.S. District Judge Brian M. Morris presided. Chief Justice Morris set the sentence for June 24. Mattson was detained.

In court documents filed in the case, the government alleged that on March 3, 2020, law enforcement was called to the Blackfoot Indian Reservation after a body was discovered, which showed signs of ‘homicide. The body was identified as John Doe. An autopsy confirmed the manner of death to be homicide, with evidence of blunt force injuries.

Further, the government alleged that on March 10, 2020, Mattson called Blackfeet Law Enforcement, confessed to killing John Doe and told the dispatch he had a knife and a gun. . As officers responded to the residence, Mattson called again and told the dispatcher he was holding a hostage, identified as Jane Doe, at knifepoint. Mattson threatened to kill Jane Doe and held her hostage for about four hours before she could escape. Mattson was taken into custody.

Assistant U.S. Attorney Kalah Paisley is prosecuting the case, which has been investigated by the FBI, Bureau of Indian Affairs and Blackfeet Law Enforcement.


Nohemi M. Moore