U istragu se uključio Ralph Demory, predsjednik Policijskog savjetodavnog odbora uz šefa policije, Bernarda Harmatza, poručnika Odjela za ubojstva, Paula Stallera, i Richarda Atkinsa iz FBI-a.
Investigation was already underway when Ralph Demory... chairman of the Police Advisory Board, arrived. He conferred with Chief of Police Bernard Harmatz... Lieutenant Paul Staller of the Homicide Squad... and Richard Atkins of the F.B.I.