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Investigators discovered a safe in Jeffrey Epstein’s Manhattan mansion that held “piles of cash,” diamonds and an expired passport from a foreign country which had Mr. Epstein’s photo but a fake name and said he lived in Saudi Arabia.

Prosecutors revealed the safe’s contents as they argued on Monday in Federal District Court in Manhattan that Mr. Epstein should be denied bail before his sex-trafficking and conspiracy trial because he was a flight risk and a danger to the community.

He is accused of abusing dozens of underage girls in New York and Florida in the early 2000s.

Two women who said Mr. Epstein had abused them bolstered the government’s argument, urging Judge Richard M. Berman to deny him bail.

“He’s a scary person to have walking the streets,” said Courtney Wild, who said Mr. Epstein began sexually abusing her when she was 14.