Authorities hope Gacy’s blood will solve old murders

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The Cook County Sheriff’s Department is trying a new approach to find out if serial killer John Wayne Gacy had more victims.

Authorities are using Gacy’s DNA to see if it matches any other cases in which DNA is known to exist. The will county coroners office had vials of Gacy’s blood in storage from when Gacy was executed in 1994.

But until now, the blood had not been used for DNA testing in unsolved crimes.

The sheriff’s department used a rare procedure to add him to a national database because his death is is also considered a homicide.

Gacy is known to have murdered 33 boys and young men.

So far, the new tests have not linked any other crimes to gacy.

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