A Seattle federal grand jury is investigating allegations by an aspiring model from Washington who said she was raped, assaulted and threatened by magician David Copperfield at his private island in the Bahamas in July, at least three federal law-enforcement officials have confirmed.

The Washington woman, 21, has told law enforcement that she and her family were approached at a Jan. 25 performance in the Tri-Cities area by a member of Copperfield's entourage almost as soon as they entered the auditorium. They were led to special seats, and Copperfield selected the woman to come on stage as part of his act, the federal sources said.

Sources confirmed that the woman told investigators Copperfield later promised he could help with her modeling career and invited her to his isolated $50 million private retreat southeast of Nassau, Bahamas.

Copperfield's attorney, David Chesnoff of Las Vegas, reiterated Friday that "Copperfield has never forced himself on anyone."