John Matthew Ruiz, 44, was fatally shot in the chest on May 7, 2006, in Brigham City, Utah. The shooting occurred after a party he and his wife hosted. His wife, Vickie Marie Ruiz, discovered him with another woman in a motor home parked beside their house, retrieved a .22-caliber handgun from the home, and confronted them. Ruiz died of a single gunshot wound despite emergency responders being called.

Vickie Marie Ruiz was arrested and initially charged with first-degree felony murder. She later pleaded guilty in September 2006 to second-degree felony manslaughter under a plea agreement. At sentencing in November 2006 the judge reduced the conviction to a third-degree felony and imposed a sentence of up to five years in Utah State Prison; family members testified and their daughter urged the harshest sentence while defense counsel argued the shooting was not intended to be fatal. This was reported as the first domestic violence homicide in Brigham City in over twenty years.

If anyone knew John Ruiz, his family, or has information about the events that night, please share what you know.