By Debbie Emery - Breaking Celebrity News Reporter

Law enforcement officers are hoping that blood and DNA samples taken from notorious serial killer John Wayne Gacy and other condemned murderers could help solve countless cold cases.

The Cook County Sheriff's Department in Illinois has gotten creative with their investigation of unsolved crimes and created DNA profiles of Gacy and other executed murderers to enter them into a national database shared with law enforcement agencies across the states, reported ABCNews.com.

The aim is to find matches of DNA evidence from blood, semen, skin or strands of hair that connect the deceased killers to current murder mysteries and prompt other states to follow suit.

"You just know some of these guys did other murders that were never solved," said  sheriffs' detective Jason Moran, who is spear-heading the effort that began last summer with the exhumation of Gacy's body to compare DNA samples with missing young men from the 1970s when he ran his reign of terror.

As Breaking Celebrity News previously reported, the "Clown Killer" murdered 33 victims and despite his execution in 1994 by lethal injection, police reopened the investigation in October 2011 after dozens of families of potential victims came forward to volunteer their DNA.

That campaign, which led to the identification of one Gacy victim, prompted investigators to use the technology to find out if the serial killer committed grisly crimes outside of his comfort zone of Chicago, where he commonly dumped bodies in a river or in the crawl space of his house.