The Easter Sunday death of 46-year-old Matthew Holt remains a mystery, South Salt Lake police say.
Investigators have not identified a suspect or motive in the case, department spokesman Gary Keller wrote in a Wednesday update.
But they are hoping to track down several potential witnesses who were seen on camera in the area around the time Holt died.
A business owner found Holt, a South Jordan resident, dead in his car in the area of 3200 South and 900 West on Sunday afternoon. Officials said he had been shot inside his Mazda sedan, and the car door was ajar.