Johnson’s lawyers argue mental retardation

The newest appeal of the death sentence of a man convicted of a Columbia triple murder claims he’s mentally retarded. Lawyers for Ernest Johnson have argued in a Columbia courtroom that his sentence should be commuted to life in prison. Two mental health experts say he is mildly retarded and has partial fetal alcohol syndrome. His lawyer says Johnson had a brain tumor removed last year and has trouble walking now. He was convicted of killing three employees of a convenience store in 1995.┬áHis death sentence has been overturned twice but reinstated both times. []