ATLANTA (AP) — A clemency hearing is set for Wednesday for a Georgia death row inmate convicted of murder in the slaying of a store clerk who was scheduled to testify against his son.

Tommy Lee Waldrip, who's 68, is set to die Thursday evening at the state prison in Jackson. He was convicted and sentenced to death in the April 1991 slaying of 23-year-old Keith Evans in Dawson County.

Evans was a store clerk in Forsyth County and had testified in the 1990 armed robbery trial of Waldrip's son, John Mark Waldrip. The younger Waldrip was convicted, but he was granted a new trial and released on bond, according to Georgia Supreme Court records from Tommy Lee Waldrip's case. Evans was set to testify in the retrial.