Devin Marshall, 37, was found with multiple gunshot wounds in his vehicle in the middle of the roadway near the Vista Valencia Golf Course in Valencia on December 31, 2023. Deputies arrived about 4:31 a.m.; he was treated at the scene, taken to Henry Mayo Newhall Hospital, and later pronounced dead. The Los Angeles County Coroner ruled the manner of death homicide, cause multiple gunshot wounds.

Investigators detained and questioned a man who lived nearby and had returned to the scene shortly after the shooting; he was identified as a person of interest but was not arrested and has not been publicly named. As of October 2024 detectives were still awaiting processing of physical evidence and no arrests had been announced. Prior arrests for Marshall in 2017 and 2018 for domestic-related offenses are on record.

Did anyone in the Valencia area see or hear anything around 4:30 a.m. on December 31, 2023 that could help this investigation?