Ai Shan Guo, a 66-year-old Asian woman, was fatally shot in Alhambra, California, on Saturday, December 27, 2003. Her death was ruled a homicide by the Los Angeles County coroner.

The Alhambra Police Department, the Los Angeles County Crime Lab and the Coroner’s Office investigated the killing. No arrests or publicly identified suspects have been reported, and the case remains unresolved. There are no noted court proceedings tied to the murder.

What information might help move this case forward for investigators or family members?