**FILE** This photo provided by the Georgia Department of Corrections shows death row inmate Troy Davis, who was convicted of killing an off-duty Savannah police officer in 1989. (Associated Press/Georgia Department of Corrections)

**FILE** This photo provided by the Georgia Department of Corrections shows death row inmate Troy Davis, who was convicted of killing an off-duty Savannah police officer in 1989. (Associated Press/Georgia Department of Corrections)