Federal Jury Convicts Porcupine Man of Assault and Witness Tampering Charges

RAPID CITY - United States Attorney Ron Parsons announced that a federal jury has convicted Jimmy Pilcher, age 49, of Porcupine, South Dakota, of Assault by Strangulation and Suffocation, three counts of Assault Resulting in Substantial Bodily Injury to a Spouse, Intimate Partner, or Dating Partner, Assault with a Dangerous Weapon, and Witness Tampering, following a three-day jury trial in federal district court in Rapid City, South Dakota. The verdict was returned on April 9, 2026.

The charges carry a maximum penalty of sentence of 20 years in prison and/or a $250,000 fine, and a $600 special assessment to the Federal Crime Victims Fund.

Pilcher was indicted by a federal grand jury in January 2026.

During the wintertime of 2024, Pilcher began a romantic relationship with the victim. Shortly after their relationship started, Pilcher began controlling the victim by monitoring her communications with others. When Pilcher started to lose control of his victim, he began assaulting her and using other forms of mental and emotional manipulation on her. In July 2025, Pilcher saw a picture of the victim with another male and accused her of cheating on him. Pilcher became enraged and punched the victim in the face and stomach and pulled her hair. He used his knee to continuously strike the victim's upper leg and outer thigh/hip area. Pilcher then strangled the victim over a kitchen sink. This strangulation caused the victim to see flashes of light and impeded her ability to breathe. The next day she received medical attention at Indian Health Services, and the staff observed injuries consistent with abuse, including bruising around her neck.

In October 2025, Pilcher assaulted the same victim in the head and face inside a truck in rural Pine Ridge. Witnesses intervened and were able to get the victim away from Pilcher. The Oglala Sioux Tribe Department of Public Safety responded to the scene and arrested Pilcher. Following his arrest, Pilcher began contacting the victim from within the jail. Pilcher was able to convince the victim not to show up for court and was eventually released from jail. A tribal protection order was, however, still in effect.

On December 5, 2025, in violation of the protection order, Pilcher took the victim inside his truck and drove to a field away from his residence. While inside the truck, Pilcher accused her of cheating on him with another male. Pilcher dragged the victim across the seat, threw her out of the truck, and pulled her up by her hair. During this beating, Pilcher struck the victim in the face, hit her in the back of the head, punched and kicked her with shod feet, and strangled her. During the beating, Pilcher threatened to kill her and her family. The victim was able to get away from Pilcher and got a ride to her house. Pilcher was eventually arrested by law enforcement.

After his arrest, Pilcher contacted the victim from the jail in Pine Ridge. Pilcher attempted to persuade the victim into not pursuing charges and pleaded with her not to report the full extent of the abuse. Pilcher told the victim and his sister that he had spoken with law enforcement and was aware that his case was under federal investigation.

This matter was prosecuted by the U.S. Attorney's Office because the Major Crimes Act, a federal statute, mandates that certain violent crimes alleged to have occurred in Indian country be prosecuted in federal court as opposed to State court.

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

A presentence investigation was ordered and sentencing will be scheduled at a later date. The defendant was remanded to the custody of the U.S. Marshals Service.