A Poplar resident, Lawrence George Fast Horse, has been sentenced to 23 months in prison and three years of supervised release for assaulting a woman on the Fort Peck Indian Reservation. The announcement was made by U.S. Attorney Kurt Alme.
Fast Horse, 35, pleaded guilty in September 2025 to one count of domestic assault by a habitual offender. Chief U.S. District Judge Brian M. Morris presided over the case.
According to court documents, the incident occurred on August 2, 2024, when Fast Horse stabbed Jane Doe in Poplar. Officers responding to the scene observed a stab wound on Jane Doe’s upper back. During a search at the scene, officers found a knife with brass knuckles attached in Fast Horse’s right-side shorts pocket.
A witness reported to law enforcement that Fast Horse and Jane Doe were arguing before he pushed her from behind and tried to hide a blade behind his back.
Jane Doe received treatment for three stab wounds and was admitted to the hospital for overnight observation.
Fast Horse has previous convictions for domestic assault dating back to June 20, 2008; May 23, 2009; January 27, 2013; October 21, 2019; and October 26, 2020.
The case was prosecuted by the U.S. Attorney’s Office. The investigation was conducted by the FBI and Fort Peck Tribes Department of Law and Justice.
