 Ying committed suicide in his prison cell on October 22, about two weeks before his set execution date.This was the worst case of mass murder in California history at that time, surpassing the killing of six persons each by James Dunham on a farm in Santa Clara County in 1896, and by John Goins in Stockton and Galt in 1926.Ying, who also went by the names Wong Gay and Lim Onn, had been arrested by San Francisco police in 1924 as a gunman and narcotics peddler.