John Joseph Boyle, 83, was fatally shot in the San Carlos neighborhood of San Diego on August 30, 2017. Police responded to reports of gunshots and Boyle died at a hospital from his injuries. The San Diego Police Department opened a homicide investigation but reported no immediate suspects.

Investigators described the case as hampered by a lack of witnesses and limited suspect information, which slowed progress. The department and Crime Stoppers asked the public for tips and the city’s Cold Case Team is listed as a resource for long-unsolved investigations connected to cases like Boyle’s.

If anyone in San Carlos that night remembers hearing or seeing anything unusual, or has information that could help investigators, contact the San Diego Police Homicide Unit or Crime Stoppers.