News and Press Releases

Ft. Thompson Woman Charged with Involuntary Manslaughter

August 2, 2012
Contact: Mark E. Salter
Assistant United States Attorney

U.S. Attorney Brendan V. Johnson announced that a Ft. Thompson woman has been charged with Involuntary Manslaughter by criminal complaint.

Leigha R. Koster a/k/a Leigha R. Tapio, age 20, was charged on July 30, 2012. She appeared before U.S. Magistrate Judge Mark A. Moreno on August 1, 2012. The maximum penalty upon conviction is not more than 8 years of custody, a $250,000 fine, or both.

The charge stems from an incident on July 28, 2012, when Koster sped away from a police officer during a traffic stop and traveled at a high rate of speed in excess of 100 miles per hour. The vehicle was involved in an accident and rolled over in the ditch, during which time the victim was ejected from the vehicle. The victim was pronounced dead at the scene by the county coroner.

The charge is merely an accusation, and Koster is presumed innocent until and unless proven guilty.

The investigation is being conducted by the Federal Bureau of Investigation. Assistant U.S. Attorney Meghan N. Dilges is prosecuting the case. Koster was remanded to the custody of the U.S. Marshal. A trial date has not yet been set.



Return to Top

The U.S. Attorneys Office

Stop Human Trafficking
2013 Annual Report

Stay Connected: Visit us on Twitter
United States Attorneys 225th Anniversary
The Office of U.S. Attorney
Community Prosecution Strategy

South Dakota Community Prosecution Strategy

Law Enforcement Coordinating Committee

Training and seminars for
Federal, State, and Local
Law Enforcement Agencies.

Justice 101