RAPID CITY, S.D. — Mason Neck, 35, of Rapid City, has been sentenced to one year and one day in federal prison for failing to register as a sex offender, U.S. Attorney Alison J. Ramsdell announced Monday. Neck was also sentenced to five years of supervised release and ordered to pay a $100 special assessment to the Federal Crime Victims Fund.
Neck, who was convicted of abusive sexual contact in 2019, is required by law to register as a sex offender and update his registration within three business days of relocating or changing employment. Although Neck initially registered upon beginning a period of supervised release in September 2023, he moved from his registered address in April 2024 without updating his registration, in violation of federal law. He was arrested in Rapid City on May 8, 2024.
The case was prosecuted as part of Project Safe Childhood, a Department of Justice initiative aimed at combating child sexual exploitation and abuse. The program coordinates federal, state, and local resources to identify offenders and protect victims.
The U.S. Marshals Service led the investigation, and Senior Litigation Counsel Kirk Albertson prosecuted the case. Following sentencing by U.S. District Judge Camela C. Theeler on November 25, 2024, Neck was immediately remanded to the custody of the U.S. Marshals Service.
This case highlights the DOJ’s ongoing commitment to enforcing sex offender registration requirements to protect public safety.