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AI Photo Revives Hunt for 1996 Sonoma Murder Fugitive

2025-08-08Ryan Mense3 minutes read
Cold Case
True Crime
Artificial Intelligence

A Decades Old Case Gets a High Tech Boost

In a fascinating blend of modern technology and cold case investigation, authorities in Sonoma County are renewing their search for a murder suspect who has been on the run for nearly three decades. As reported by KRON4, the Sonoma County Sheriff’s Office has released a new, artificially generated image of the suspect, showing what he might look like today after almost 30 years.

The case dates back to 1996, when a man was discovered shot to death and buried in a shallow grave, a brutal crime that has remained unsolved for a generation. Now, investigators hope that this AI-powered age progression photo will generate new leads and finally bring a long-awaited resolution.

The 1996 Murder of Alfonso Reyes Martinez

On May 20, 1996, the body of Alfonso Reyes Martinez was found near the Alexander Valley Bridge, located north of Healdsburg. The Sheriff's Office described his death as a "brutal murder." For years, detectives worked the case, eventually identifying a primary suspect but were unable to locate him.

While the prime suspect remains at large, authorities were successful in convicting another individual as an accessory to Martinez's murder, confirming that others were involved in the crime and its aftermath.

Who is Suspect Antonio Bravo Marquez?

Investigators identified the suspected killer as Antonio Bravo Marquez. At the time of the homicide, Marquez worked as a vineyard laborer and was known to live in a transient encampment near Highway 128 and Alexander Valley Road. Now 61 years old, Marquez has also used aliases, including Antonio Brava.

Left: Murder suspect Antonio Bravo Marquez in 1995. Right: An estimated age-progressed photo of Marquez using AI (Photo: Sonoma County Sheriff’s Office)

His physical description from 1996 is as follows:

  • Height: 5 feet 3 inches
  • Build: Medium
  • Hair: Short and black
  • Eyes: Brown
  • Other: May have a light mustache

He drove a distinctive vehicle: a white or tan 1973 Ford Maverick with a brown vinyl top.

A Renewed Call for Public Assistance

The Sheriff's Office is making a direct appeal to the public for any information that could lead to Marquez's whereabouts. "If you know something—even if it seems small—now is that time to come forward," the department stated in a release. They believe someone, somewhere has information that could be the final piece of the puzzle.

Anyone with information is urged to contact the Sonoma County Sheriff’s Office Cold Case Unit directly at 707-565-2727. Alternatively, you can provide an anonymous tip through the sheriff’s official website.

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