19-year-old's remains identified as John Wayne Gacy victim after 35 years

(CBS/AP) CHICAGO - After 35 years, authorities have identified a 19-year-old Chicago construction worker as one of serial killer John Wayne Gacy's previously unnamed victims.

William George Bundy disappeared in 1976 and his sister always suspected Gacy killed her brother. Detectives were able to confirm her suspicions using genetic testing, more than three decades after finding bones beneath Gacy's house.

Cook County, Ill. Sheriff Tom Dart made the announcement Tuesday, seven weeks after issuing a public plea for families of Gacy's suspected young victims to submit DNA samples, to compare with recovered skeletal remains.

Bundy's sister, Laura O'Leary, said that though revisiting her brother's death is painful, identifying his remains brings the family closure.

Gacy is one of history's most notorious serial killers, largely known because of his side work as an amateur clown. He was convicted of killing 33 young men between 1972 and 1978. Most were buried in a crawl space under his home, with four others dumped in a river.

Gacy was executed by lethal injection in 1994.

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