Authorities say a North Carolina man who moved to Chicago was one of the victims of John Wayne Gacy, who was convicted of killing 33 young men and boys in the 1970s. Cook County Sheriff Tom Dart said at a news conference Monday that Francis Wayne Alexander would have been 21 or 22 years old when Gacy killed him sometime between early 1976 and early 1977. Alexander was one of eight Gacy victims whose remains were buried without police knowing who they were. Dart’s office exhumed those remains in 2011 in the hopes that DNA testing could help. Five victims now remain unidentified. Gacy, who was executed by lethal injection in 1994, lived in Waterloo prior to the killings in Illinois. While in Waterloo, Gacy was charged and convicted on one count of sodomy in 1968. He was sentenced to 10 years in prison at the Anamosa State Penitentiary but was granted parole 18 months after his imprisonment.