SHERIDAN, Wyo. (AP) — The Wyoming Supreme Court is set to hear arguments in the appeal of a Sheridan man serving a life sentence in the 2009 home invasion killing of an elderly businessman.

The court has scheduled arguments for Thursday morning in the appeal of Dennis Poitra, Jr. He was convicted of first-degree murder and other crimes in connection with the killing of 79-year-old Robert Ernst.

Poitra was 19 when Ernst was killed. Two other teenagers also were convicted and are serving life sentences.

Lawyer Elisabeth M. W. Trefonas represents Poitra. She has filed papers with the court stating that Poitra took antipsychotic medication shortly before the killing and was unable to control his behavior.

Lawyers for the state say Poitra received a fair trial and say his sentence should be upheld.