POTOSI, Mo. (AP) — A 37-year-old man was executed by injection early Wednesday for the 1985 slaying of a teenager who was beaten with a tire iron and run over by a car.

Stanley D. Lingar was the first person to be executed in Missouri this year after Gov. Bob Holden denied clemency. He declined to make a final statement but issued one prepared on behalf of his family. It sought forgiveness from the family of his victim, Thomas S. Allen, 16.

Advocates for Lingar made several claims on his behalf: He suffered from a severe mental disorder and was borderline mentally retarded; was drunk at the time of the killing; and that the other man involved in the crime, David L. Smith, served just six years in prison.