JACKSON, Ga. (AP) — A Georgia death row inmate who killed a sheriff's deputy is set to be executed.

Robert Wayne Holsey's execution is set for 7 p.m. Tuesday at a state prison in Jackson. A jury in February 1997 convicted Holsey of killing Baldwin County sheriff's deputy Will Robinson.

Holsey robbed a Milledgeville convenience store early on Dec. 17, 1995. The clerk called police right after he left and described the robber and his car.

Robinson pulled Holsey over minutes later. Authorities say Holsey fired at Robinson as the deputy approached the vehicle.

Lawyers for Holsey have argued that he is intellectually disabled and therefore shouldn't be executed. They say his trial lawyer failed to tell the jury about that disability and other evidence that could have spared him the death penalty.