On the morning of December 9, 2023, police in St. Louis responded to a vehicle collision in the Dutchtown neighborhood at California Avenue and Osage Street. First responders found a car that had struck a parked vehicle and discovered 30-year-old David Harmon in the driver’s seat. Although the scene initially looked like a traffic crash, closer inspection revealed Harmon had suffered a gunshot wound to his left side. He was taken to a hospital and pronounced dead, and the case was reclassified as a homicide.

Harmon was a well-known mobile mechanic in the area, often stopping to help stranded motorists or repairing friends’ cars for little or no pay. Family members, including his mother Michelle Jacobson, say he was likely in the neighborhood that morning to fix a vehicle. The motive remains unclear; investigators pursued leads but later said those avenues were exhausted without identifying a suspect, and no description of a person of interest has been released.

If anyone in Dutchtown on December 9 remembers seeing Harmon or noticed something unusual that morning, please come forward with information that might help solve his murder.