Julio Castaneda, 33, was one of two men killed when gunfire erupted late on the night of September 18, 2025, in the 1900 block of D Street in Antioch. Officers who responded to reports of shots fired at about 10:21 p.m. found four victims; two men, including Castaneda, were pronounced dead at the scene while a 36-year-old man and a 15-year-old boy were rushed to hospitals, the teen in critical condition.

The Contra Costa County Sheriff-Coroner later identified the other deceased as 42-year-old Thomas Vega Espinoza. Investigators sealed the block as evidence technicians documented shell casings and canvassed for witnesses; early statements listed the suspects as unknown and no arrests have been announced. Local reports say both men were innocent bystanders; family members described Castaneda as a devoted family man who was struggling to understand how a routine evening ended in sudden loss.

Anyone who was near D Street and West 19th Street around 10:21 p.m. on September 18, 2025, or who has information about this shooting is asked to contact Detective John Cox with the Antioch Police Department.