Rapid City Man Sentenced to Federal Prison for Failure to Register as a Sex Offender

RAPID CITY - United States Attorney Alison J. Ramsdell announced today that U.S. District Judge Camela C. Theeler has sentenced a Rapid City, South Dakota, man convicted of Failure to Register as a Sex Offender. The sentencing took place on November 25, 2024.

Mason Neck, age 35, was sentenced to one year and one day in federal prison, followed by five years of supervised release, and ordered to pay a $100 special assessment to the Federal Crime Victims Fund.

Neck was indicted by a federal grand jury in July 2024.  He pleaded guilty on August 28, 2024.

Neck was convicted of Abusive Sexual Contact in 2019. As a consequence of this conviction, he is required to register as a sex offender and to update his registration within three business days of relocation or changing employment. In September 2023, Neck began a period of supervised release residing in Rapid City and appropriately registered as a sex offender. In April 2024, Neck moved from his registered address, but did not thereafter update his registration. He was arrested in Rapid City on May 8, 2024.

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. Marshals Service. Senior Litigation Counsel Kirk Albertson prosecuted the case.

Neck was immediately remanded to the custody of the U.S. Marshals Service.