Shawn Michael Mashburn, 29, was shot and killed in Mesa, Arizona, in the early morning hours of July 3, 2016. Responding officers found a white truck with its door ajar near 99th Street and University Drive and discovered Mashburn beside the vehicle with a fatal gunshot wound. He was taken to a hospital but died of his injuries.

Investigators treated the incident as a homicide and said some form of illegal activity was likely involved, but motive and circumstances were not immediately clear. Despite an extensive investigation, no arrests or publicly identified suspects have been announced. Authorities have asked the public for help in the ongoing probe.

If anyone has information about Mashburn, his movements that night, or the white truck seen at the scene, please come forward to assist the investigation.