Fort Thompson Man Sentenced for Failure to Register as a Sex Offender

PIERRE - United States Attorney Alison J. Ramsdell announced today that U.S. District Judge Eric C. Shulte, has sentenced a man from Fort Thompson, South Dakota, who had been convicted of Failure to Register as a Sex Offender. The sentencing took place on July 29, 2025.

Stuart Dion, age 41, was sentenced to time served through August 4, 2025, equal to 11.5 months in custody, followed by five years of supervise release, and ordered to pay a special assessment to the Federal Crime Victims Fund in the amount of $100.

Dion was indicted by a federal grand jury in January 2025.  He pleaded guilty on July 14, 2025.

Dion is required to register as a sex offender under federal law due to a prior federal conviction for Sexual Abuse of a Minor. Dion has been convicted of Failure to Register in the past. Following his release from prison on the most recent conviction, Dion registered an address in Ft. Thompson, SD, on the Crow Creek Sioux Indian Reservation in March 2024. On April 11, 2024, Dion moved from his registered address and knowingly failed to update his registration with authorities as required by law.   

This case was brought as part of Project Safe Childhood, a nationwide initiative to combat the growing epidemic of child sexual exploitation and abuse, launched in May 2006 by the Department of Justice. Led by the U.S. Attorneys’ Offices and the DOJ’s Child Exploitation and Obscenity Section, Project Safe Childhood marshals federal, state, and local resources to locate, apprehend, and prosecute individuals who exploit children, as well as identify and rescue victims. For more information about Project Safe Childhood, please visit https://www.justice.gov/psc.

This case was investigated by the U.S. Marshal’s Service.  Assistant U.S. Attorney Meghan Dilges prosecuted the case.