Warren Lee Hill

A Georgia death row inmate who has come within hours of execution on three previous occasions is set to die once again.

Warren Lee Hill, who is 54, is scheduled for execution at 7 p.m. Tuesday at the state prison in Jackson.

Hill was serving a life sentence in 1990 for the 1986 slaying of his girlfriend when he killed a fellow inmate. A jury in 1991 convicted Hill of murder and sentenced him to death.

Hill's lawyers have long argued he is intellectually disabled and therefore shouldn't be executed. The state has consistently argued Hill has failed to prove beyond a reasonable doubt that he is intellectually disabled.

Georgia has the toughest-in-the-nation burden of proof for capital defendants seeking to avoid execution on grounds of intellectual disability.

Tags: death row inmate Warren Lee Hill, Warren Lee Hill, clemency denied for warren lee hill, death row, death penalty, execution