CHICAGO (AP) — Attorneys for a woman who long suspected her son was not among the victims buried underneath serial killer John Wayne Gacy's house in the 1970s say DNA tests have concluded the remains were not her son.

Robert Stephenson and Steven Becker said Thursday that a laboratory in North Carolina compared DNA from the exhumed body to DNA from Sherry Marino and found the woman was not the biological mother.

But the orthodontist who compared the dental records of the 14-year-old Michael Marino and the remains found under Gacy's home says he has no doubt that his identification of Marino is still correct.