Allan Laidlaw, 61, was found dead in Corona, California, on September 3, 2014. His death was investigated by the Corona Police Department and the Riverside County Sheriff’s Department and was ultimately determined not to be from natural causes; investigators concluded he had suffered multiple injuries consistent with a violent attack and treated the case as a homicide.

Detectives questioned several people and examined forensic evidence, as well as Laidlaw’s personal and professional relationships, but no immediate arrests were made and the case remained open. Authorities issued public appeals for information and named multiple persons of interest over time as they worked to establish motive and identify suspects.

Anyone who knew Allan, saw anything in Corona around September 3, 2014, or has information relevant to the investigation is asked to come forward.