Mark Papa Frisco Guardado was 46 when he was shot multiple times during an altercation outside a Mission District bar in San Francisco on the night of September 2, 2008. The shooting occurred around 10:30 p.m. near 24th Street and Treat Avenue, not far from the Hells Angels clubhouse where Guardado lived. He was taken to a nearby hospital and later died of his wounds.

Investigators identified 37-year-old Christopher Ablett, a member of the rival Mongols Motorcycle Club, as the primary suspect. A $5 million arrest warrant was issued after the shooting; Ablett fled the state and later turned himself in in Bartlesville, Oklahoma, on October 4, 2008. He was charged with murder in aid of racketeering and related offenses, argued self-defense at trial, and the jury found him guilty. In 2012 he was sentenced to life in prison without parole.

The killing and trial drew wide attention because of Guardado’s role as president of the San Francisco Hells Angels chapter and the long-standing rivalry between the two clubs. If anyone knew Guardado or witnessed the events that night, does anyone have details that could add to the record?