Aiping Diao, a 60-year-old man from China, was shot and killed on April 13, 2016, inside a West Covina condominium where he and his wife, Shu Zhang, were visiting their daughter and her family. Neighbors reported hearing gunshots and children screaming; officers found Diao and Zhang dead from gunshot wounds and the couple’s three grandchildren, ages 8, 6, and 3, hiding in a bathroom unharmed.

Their son-in-law, Caminero Wang, was arrested at the scene and charged with two counts of murder, with special-circumstance allegations for use of a handgun and multiple murders. The killings were described as stemming from a family dispute that escalated into lethal violence.

Did anyone in the community know the family or have information about the events that night?