Mental incompetency of accused after crime commission; effect; death penalty; stay of execution.

(1) A person who becomes mentally incompetent after the commission of an offense shall not be tried for the offense until such disability is removed as provided in section 29-1823. (2) If, after a verdict of guilty, but before judgment is pronounced, a defendant becomes mentally incompetent, then no judgment shall be given until such disability is removed. (3) If a defendant is sentenced to death and, after judgment, but before execution of the sentence, such person becomes mentally incompetent, execution of the sentence shall be stayed until such disability is removed.