Source: Office of United States Attorneys
RAPID CITY – United States Attorney Alison J. Ramsdell announced that a jury has convicted McKenzie Big Crow, age 20, of Porcupine, South Dakota, of Involuntary Manslaughter, the Unborn Victims of Violence Act, and Possession of an Unregistered Firearm following a three-day jury trial in federal district court in Rapid City, South Dakota. The verdict was returned on January 23, 2025.
The convictions relating to the shooting deaths each carry a maximum penalty of eight years’ imprisonment and/or a $250,000 fine, three years of supervised release, and a $100 special assessment to the Federal Crime Victims Fund. The firearm conviction carries a maximum penalty of 10 years’ imprisonment and/or a $250,000 fine, three years of supervised release, and a $100 special assessment to the Federal Crime Victims Fund.
A federal grand jury indicted Big Crow in June of 2024 for Second Degree Murder, Unborn Victims of Violence Act, Discharge of a Firearm During the Commission of a Crime of Violence, and Possession of an Unregistered Firearm.
On August 20, 2023, near Porcupine, Big Crow was illegally in possession of a Savage Arms Model 62, semiautomatic rifle. The barrel had been sawed off, and the defendant taped components of an Airsoft rifle to the gun to make it appear like an AK-47. Big Crow claimed he put the rifle in a backpack and that the gun discharged when he bumped the bag against a door. The gunshot struck 19-year-old Ashton Provost in the chest, killing her and her unborn child within minutes. The gun was later found hidden under Big Crow’s bed. On the day of the shooting, Big Crow had drugs in his system including marijuana, cocaine, MDMA, and methamphetamine.
This case was investigated by the Federal Bureau of Investigation, the Oglala Sioux Tribe Department of Public Safety, and the Bureau of Alcohol, Tobacco, Firearms, and Explosives. Assistant United States Attorney Heather Knox prosecuted the case.
A presentence investigation was ordered, and a sentencing date has been set for April 25, 2025. The defendant was remanded to the custody of the U.S. Marshals Service.