United States Attorney's Office
Acting United States Attorney Matthew R. Molsen announced that Arvis Manvil Lewis, Jr., 39, of Sisseton, South Dakota, was sentenced on April 9, 2025, in federal court in Omaha, Nebraska, for abusive sexual contact with a child under twelve (12) years of age. United States District Court Judge Brian C. Buescher sentenced Lewis to 77 months’ imprisonment. There is no parole in the federal system. After Lewis’s release from prison, he will begin a 5-year term of supervised release.
In December 2022, Lewis made sexual contact with a minor child (age 9) entrusted to his care as the child slept. The minor child disclosed Lewis’s conduct to a trusted adult, who reported the incident to appropriate authorities. A forensic interview was conducted with the minor child, confirming the offense occurred in the child’s home in Santee, Nebraska, on the Santee Sioux Nation Indian Reservation. After initially denying the offense, Lewis ultimately confessed to law enforcement that he had perpetrated against the minor child.
This case was prosecuted in federal court because the offense was a felony and occurred on the Santee Sioux Nation Indian Reservation in Nebraska.
This case was investigated by the Federal Bureau of Investigation.