Angel Francisco Diaz was 37 when he was murdered in Long Beach, California, on September 15, 2007.

The killing is described as one of many violent incidents that strained Long Beach during that period, amid gang activity, mass shootings, and other crimes. Diaz’s death is listed among numerous unsolved homicides in California; sparse leads and limited coverage have made it difficult to advance the investigation despite improvements in forensic technology.

Does anyone with memories of Long Beach in 2007 or information about Angel Francisco Diaz’s life or death have details to share that could help investigators?