Riddle initially was sentenced to 10 years in prison. The 2nd District Court of Appeals overturned the aggravated robbery conviction earlier this year. The court wrote that the deadly weapon notation of the charge was negated by the statement of facts of what occurred during the robbery and that the lawyer for Riddle gave him ineffective assistance in advising him to plead guilty.
Visiting Judge Timothy Campbell of Greene County heard Riddle's guilty plea. A visiting judge was assigned because the victim was related to a court employee.
As part of a plea deal, prosecutors agreed to recommend six years in prison. Riddle could have received up to eight years.
Riddle already served 12 months ordered on the breaking and entering charge and remained in prison on a sentence ordered in Shelby County on another case.