More than 30 people have contacted the Cook County sheriff's office following a request to the public to help identify the eight unknown victims of John Wayne Gacy.
The calls have come from both the Chicago area and around the U.S., sheriff department spokesman Frank Bilecki told the Daily Herald.
At a morning news conference, Dart asked that anyone with missing loved ones come forward to give DNA samples in hopes of matching names to the remaining eight Gacy victims. The period in question would be anyone who disappeared between 1972 and 1979.
Gacy was convicted in the murder of 33 young men and boys, most found buried in the crawl space of his Norwood Park Township home near O'Hare Airport. The former construction contractor was executed in May of 1994.
In a wide-ranging investigation spanning the last six months, sheriff's investigators exhumed the eight unidentified bodies and were even forced to search for some jawbones which had been separated from the bodies in the original investigation 30 years ago.
Those mandible bones had been buried separately by the medical examiner's office after their investigation was completed.