Millionaire killer John du Pont nears final appeal

Millionaire murderer John du Pont's appeals have nearly run out as the chemical-fortune heir fights his 1997 conviction for killing an Olympic wrestler at his Pennsylvania estate.

The 71-year-old du Pont has been in prison since a Delaware County jury deemed him mentally ill but still guilty of third-degree murder.

The U.S. Supreme Court upheld the verdict in 2000.

Now a U.S. appeals court in Philadelphia has rejected all but one issue raised on appeal.

And the court won't hear arguments on the issue, involving his use of a Bulgarian prescription drug before he fatally shot Olympic gold-medal winner David Schultz in 1996. The 3rd U.S. Circuit Court instead wants only written briefs.

Du Pont is serving a 13- to 30-year prison term.