⏱ 2 min read
Trevin Antonio, a 29-year-old man from Eagle Butte, South Dakota, was sentenced to 3 years and 6 months in federal prison for assaulting a woman with a weapon in Eagle Butte, within the Cheyenne River Sioux Indian Reservation, on July 31, 2025. The victim suffered severe lacerations to her face that required hospitalization. The case was prosecuted in federal court due to the Major Crimes Act, which mandates that certain violent crimes in Indian country be tried at the federal level. Antonio pleaded guilty on April 9, 2026.
The investigation was conducted by the FBI and Cheyenne River Sioux Tribe Law Enforcement Services, with Assistant U.S. Attorney Wayne Venhuizen handling the prosecution. Antonio was immediately remanded to the custody of the U.S. Marshals Service following his sentencing on July 13, 2026.
The sentence includes 3 years of supervised release and a $100 special assessment to the Federal Crime Victims Fund. The case highlights the cooperation between federal and tribal law enforcement agencies in addressing violent crimes in Indian country.
The Major Crimes Act ensures that certain serious crimes, including assault resulting in serious bodily injury, are prosecuted in federal court, providing an additional layer of accountability and justice for victims in Indian country.
📋 Key Facts
- Crime: Violent Crime
- Defendant: South Dakota
- Location: SD
- Source: DOJ Press Release
