Kyle Man Sentenced to 2 Years in Federal Prison for Assault on a Federal Officer

RAPID CITY - United States Attorney Ron Parsons announced today that U.S. District Judge Camela C. Theeler has sentenced a Kyle, South Dakota, man convicted of Assault on a Federal Officer. The sentencing took place on June 15, 2026.

Robert Wayne Old Horse, 58, was sentenced to serve two years in federal prison, followed by three years of supervised release, and ordered to pay a $100 special assessment to the Federal Crime Victims Fund.

Old Horse was indicted for the charge by a federal grand jury in August 2025. He pleaded guilty on April 6, 2026.

On April 5, 2025, at Pine Ridge, Old Horse was arrested by tribal law enforcement. While inside the correctional facility, he became combative with the corrections officers and refused to enter his cell. At one point, Old Horse laid on the ground and while a female corrections officer was attempting to get him up, Old Horse kicked her in the abdomen with his foot. The officer was eight months pregnant at the time.

This case was investigated by the Oglala Sioux Tribe Department of Public Safety. Assistant U.S. Attorneys Paige Petersen and Megan Poppen prosecuted the case.

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