Ramiro Marcial-Herrera, a 44-year-old Latino man, was found stabbed to death near the Polo Fields in San Francisco’s Golden Gate Park on September 4, 2007. He had been killed while he slept, and authorities reported he may have been experiencing homelessness at the time. The location is frequented by vulnerable residents, which police said made his circumstances particularly precarious.

His killing was one of several fatal stabbings in and around Golden Gate Park during that period, and officials noted disturbing similarities among the cases that raised concern about a possible serial attacker targeting people without stable shelter. The San Francisco Police Department conducted a full-scale investigation, but no arrests were announced and no suspect has been publicly identified.

The case remains unsolved. If anyone knew Ramiro, saw suspicious activity near the Polo Fields around September 4, 2007, or has information that could help the investigation, please come forward.