On the night of August 16, 2025, Juan Luis Marquez, 41, was shot and killed in the narrow alley behind his family’s home in the 8000 block of South Hooper Avenue after he and another family member went to check a car alarm near 9:20 p.m. They encountered three people attempting to steal the vehicle; a fourth person standing by the south entrance of the alley produced a gun and opened fire. One person at the scene returned fire in apparent self-defense, a second victim was wounded in the leg and survived, and deputies and paramedics found Marquez down in the alley. The Los Angeles County Medical Examiner recorded his death as a homicide from a gunshot wound to the chest and listed the place of death as the walkway of a residence.

Investigators say the assailants fled west on 81st Street in a newer red or burgundy four-door sedan; released images show a red or burgundy Kia K5 that may have damage from gunfire. Authorities later described the suspects as four juveniles and announced a $10,000 reward for information leading to arrest and conviction. No arrests had been reported as of mid-September 2025.

If anyone saw the vehicle, the people near the alley that night, or has other information that could help identify those involved, please come forward.