Anthony Rivera, 45, of Pomona, California, was found with severe head trauma near the intersection of Holt and White avenues on August 28, 2021. Paramedics pronounced him dead shortly after arriving. The Los Angeles County Medical Examiner-Coroner listed his cause of death as a gunshot wound.

Within weeks investigators identified people they said knew Rivera and had been in a dispute over money that escalated into the fatal confrontation. On September 16, 2021, Pomona police arrested 30-year-old Mathew Milo on suspicion of murder and charged him later with first-degree murder and a felon-in-possession firearm enhancement. Police also implicated 41-year-old Theresa Flemings, who was arrested and charged with accessory after the fact for allegedly acting as the getaway driver and assisting Milo after the incident.

Rivera’s death left his community mourning and prompted a Major Crimes Unit investigation.