Source: Office of United States Attorneys
RAPID CITY – United States Attorney Alison J. Ramsdell announced that a jury has convicted William Henry Riese, age 34, of Rapid City, South Dakota, of Attempted Sexual Exploitation of a Minor, Attempted Enticement of a Minor Using the Internet, Attempted Receipt of Child Pornography, and Attempted Transfer of Obscene Material to a Minor following a three-day jury trial in federal district court in Rapid City, South Dakota. The verdict was returned on February 27, 2025.
The charges carry a mandatory minimum sentence of 15 years in custody and a maximum penalty of up to life in custody, and/or a $250,000 fine, up to a lifetime of supervised release, and a $400 special assessment to the Federal Crime Victims Fund. Restitution may also be ordered.
Riese was arrested and federally indicted in August of 2022, following the undercover sex trafficking operation conducted during the annual Sturgis Motorcycle Rally, targeting internet predators. Following multiple chats and sexually explicit text messages with a person Riese believed to be a 14-year-old girl, but who was in fact an undercover agent, Riese proceeded to negotiate a time and place he would meet the minor to engage in unlawful sex acts. When Riese went to the pre-determined location to meet the minor, he was instead met by law enforcement agents and placed under arrest.
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 Homeland Security Investigations, South Dakota Division of Criminal Investigation, South Dakota Internet Crimes Against Children Task Force, and the Rapid City Police Department. Assistant U.S. Attorney Heather Knox prosecuted the case.
A presentence investigation was ordered, and sentencing has been scheduled for May 30, 2025. The defendant was remanded to the custody of the U.S. Marshals Service.