The U.S. Supreme Court has let stand the Kansas death sentence of a man convicted of killing a college student more than two decades ago.

Kansas Attorney General Derek Schmidt says the U.S. Supreme Court on Monday declined to review 61-year-old Gary Kleypas’ case.

Kleypas was the first person condemned in Kansas after it reinstated the death penalty in 1994.

Kansas hasn’t executed anyone in more than 50 years.