CHEYENNE, Wyo. (AP) — A former Nevada brothel owner has lost his appeal of his convictions and 15-year prison sentence on federal charges of possessing and transporting child pornography.

A three-judge panel of the U.S. Court of Appeals in Denver last week affirmed the convictions of David Burgess, a member of the Hells Angels motorcycle group.

Burgess was convicted and sentenced in federal court in Wyoming last year. Prosecutors say investigators found a vast collection of child porn on two hard drives they confiscated from Burgess’ motorhome during a traffic stop in western Wyoming two years ago.

Burgess was a charter member of a Nevada chapter of the Hells Angels and was the owner of the Old Bridge Ranch, a legal brothel near Reno, Nev.