Now facing federal charges of sex trafficking in New York, Mr. Epstein was found injured on Tuesday in a Manhattan jail, according to law enforcement officials.

Remind me: Why is Mr. Epstein in custody?

Mr. Epstein, who taught at the esteemed Dalton School and later became a hedge fund manager, was charged this month in Manhattan with sex trafficking and conspiracy. If convicted, he could face up to 45 years in prison.

The alleged crimes occurred between 2002 and 2005, according to a federal indictment.

On July 6, Mr. Epstein was arrested at Teterboro Airport in New Jersey, having just arrived from Paris. That day, lewd photographs, many of which appeared to depict underage girls , were discovered by the authorities in a search of his Upper East Side home.

On July 18, a judge denied bail for Mr. Epstein, citing his potential danger to the community and the risk that he would flee to avoid prosecution.