John Miller, who was buried in the Pioneers' Home Cemetery in Prescott, Ariz., was one of several candidates to be the notorious outlaw supposedly shot dead by Sheriff Pat Garrett in Lincoln County, N.M., in 1881.
Miller's DNA is being compared to that of a bloodstain believed to be from the shooting, the Prescott Daily Courier said.
Tom Sullivan, the former Lincoln County sheriff, and Steve Sederwall, the former mayor of Capitan, N.M., set out several years ago to identify the real Billy the Kid.
Bill Fitzgerald, a spokesman for the Maricopa County district attorney, told the Daily Courier that no charges are being brought because Sederwall and Sullivan secured permission from the cemetery's operators before digging up Miller's remains last year.
So far, courts in New Mexico have kept the former officials from disinterring anyone there, including the man buried as Billy the Kid and the outlaw's mother.