NEW YORK (AP) — An heiress pleaded guilty on Friday in a sensational case accusing a cult-like upstate New York group of creating a secret harem of sex slaves for the group's self-anointed spiritual leader.

Clare Bronfman admitted in her plea in federal court in Brooklyn that she harbored someone who was living in the U.S. illegally for unpaid "labor and services" and that she committed credit card fraud on behalf of Keith Raniere, the lead of a group called NXIVM.

Bronfman - the 40-year-old daughter of the late billionaire philanthropist and former Seagram chairman Edgar Bronfman Sr. - told t...