Manhattan prosecutors say a private equity executive turned his New York City apartment into a torture chamber of “grotesque sexual violence.”

Ryan Hemphill, who remains jailed after his arrest last month, pleaded not guilty to a 116-count indictment charging him with predatory sexual assault and other crimes dating to last October. The 43-year-old, who is also a lawyer, threatened to have victims arrested or disappeared in a bid to keep them silent, prosecutors said.

“The defendant told these survivors that he was untouchable,” Manhattan District Attorney Alvin Bragg said. “The indictment makes clear that he was wrong.”

Hemphill’s apartment, near the Empire State Building, was outfitted with numerous surveillance cameras, and investigators have recovered images showing dozens, if not hundreds, of other women, many of them naked and blindfolded, Curzer said.

Investigators also found hundreds of bullets and high-capacity magazines, and a large amount of drugs, including heroin, cocaine, amphetamines, and fentanyl, prosecutors said.