Cook County Sheriff Tom Dart says he has told his investigators to look into the theory, which was raised recently by a pair of attorneys who don't believe Gacy, who was executed in 1994, could have committed some of his 33 murders without a hand from someone else, the Chicago Sun-Times reported.
Dart called the accomplice scenario "interesting" but cautioned his department's current caseload and budget constraints would not allow him to launch a full-blown investigation. "Our goal is not to disprove this but go through their information to see whether it's true," Dart said.
Dart recently launched a new effort to identify Gacy's seven unidentified victims. A detective was dispatched to Iowa Friday to interview the family of an 8th man considered a possible Gacy victim, the newspaper said.