On the time of Hattula's dying, no more bodies might be saved in Gacy's crawl space, which leaves a chance he had disposed of Hattula's body within the Pecatonica River. Stein concluded 12 victims recovered from Gacy's property died of asphyxiation. Dorsch also said that a number of different residents of West Miami Avenue stated they'd seen Gacy digging trenches on the property within the early to mid-1970s. Retired Chicago police officer Bill Dorsch said he had reason to believe there may be extra victims buried in the grounds of an condo building on West Miami Avenue in Chicago, where Gacy had been the caretaker for several years. Investigators excavated the grounds of his property until they'd exposed the substratum of clay beneath the foundations, discovering 29 bodies. A second request to excavate the grounds was granted in January 2013, and a search of the property was performed within the spring.
