The Associated Press
FILE - This undated file photo released by the Iowa Department of Corrections shows Gentric Hicks, an inmate at the Anamosa State Penitentiary in Anamosa, Iowa. Lawyers for Hicks, 74, maintain that he was wrongly convicted of first-degree murder in a 1976 slaying, but recent DNA testing on an orange hunting cap that the killer left at the crime scene was inconclusive and failed to exonerate Hicks.
IOWA CITY — Testing on a cap worn by the perpetrator of a homicide 45 years ago has failed to exonerate a prisoner who maintains his innocence, the latest setback for lawyers hoping to prove Iowa’s first wrongful conviction based on DNA.