CHICAGO—John Wayne Gacy is one of America's most notorious serial killers. He is responsible for killing 33 young men and boys. But many investigators say they believe there are more victims out there. A former Chicago Police detective says he thinks he knows where and he wants police to open the investigation.
Back in 1978, police pulled body after body from John Wayne Gacy's home on the Northwest Side. 29 of his victims were buried in a crawl space.
Rafael Tovar was a Des Plaines detective who worked the Gacy investigation. While transporting Gacy, Detective Tovar says that Gacy suggested there could be as many as 45 victims in total.
Tovar says he asked Gacy "Where are the rest of them?" to which, according to the detective, John Wayne Gacy replied, "That's for you guys to find out."
The arrest of Gacy brought back a memory for retired Chicago Police detective Dill Dorsch. He knew Gacy, and three years before Gacy went down, Dorsch says he was driving down West Miami, on the northwest side, one night when he saw Gacy with a shovel.
"It wasn't until years later that he's digging up bodies in '78," said Dorsch, "I immediately start thinking that perhaps that encounter meant more than an innocent act by John Gacy."
Dorsch says that he notified the sheriff's department but, as far as he knows, no one ever investigated.
In 1998, police returned to Gacy's old apartment building. Using a radar company U.S. Radar - to scan the grounds, police set up a tarp and began to dig.
Police say they found no new evidence of other murders by Gacy.
But, after the dig, Borsch received a letter from the radar company stating that police only excavated two possible locations on the grounds, despite the fact that the radar company found 17 possible targets.
The president of the U.S. Radar writes: "In a proper investigation, the authorities would have been more willing to excavate any possibility."
Interest in the Gacy case was renewed when a website called ShadowReports.com presented an in-depth article, that included a search warrant, signed by Detective Edwin Dickinson.
It states: "There is credible scientific evidence to believe that the possibility exists that human remains are buried in the yard and black top I believe that there are buried human remains located at West Miami."
Dorsch says he thinks police were afraid of bad publicity.
"I was told that when Gacy was arrested there was a lot of discussion about bad investigative work done by CPD related to the missing people," Dorsch said. "It wasn't followed up and these kids are now turning up dead. I don't know if that was the catalyst for it."
Dorsch says he came forward after all these years because he wants closure for the families whose loved one may have been a victim of the serial murderer known as the "Killer Clown."
The Chicago Police Department referred all requests for comment to the Cook County Sheriff's department which handled the original Gacy case.
The Cook County Sheriff's Department released this statement: "We`ve already had several discussions with Chicago Police, along with the prosecutor and others with knowledge of the original case. We`ll be meeting with Chicago detectives to discuss any investigative work they may have done in the 1990s and then see where it leads."