McLaughlin Man Sentenced for Voluntary Manslaughter

ABERDEEN - United States Attorney Alison J. Ramsdell announced today that U.S. District Judge Charles B. Kornmann has sentenced a McLaughlin, South Dakota, man convicted of Voluntary Manslaughter. The sentencing took place on September 30, 2024.

Johnathan Guggolz, 48, was sentenced to five 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.

Guggolz was indicted by a federal grand jury in October of 2023. He pleaded guilty on July 8, 2024.

On the afternoon of August 29, 2023, in McLaughlin, South Dakota, within the Standing Rock Sioux Indian Reservation, a 62-year-old man pulled into the school driveway to pick his wife up from work. Guggolz pulled up next to the man and confronted him about his driving, mocking and belittling him. The man eventually exited his car, secured a pair of duct-taped homemade nunchucks to protect himself, and squared up with Guggolz, a former amateur boxer. After a few moments of posturing, the man thrust the nunchucks towards Guggolz' hip. Guggolz then punched the man in the face, knocking him unconscious. The man fell backwards and struck his head on the concrete. Guggolz glanced down at the man, now lying helpless on the driveway, then returned to his pickup and drove away. The man subsequently died of a traumatic brain injury incurred in the assault.

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 FBI, the Bureau of Indian Affairs - Office of Justice Services, and the Mobridge Police Department. Assistant U.S. Attorney Carl Thunem prosecuted the case.

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