Jeffrey Epstein, the financier who hanged himself in a federal jail in Manhattan, was supposed to have been checked by guards every 30 minutes, but that procedure was not being followed the night before he was found, a law-enforcement official with knowledge of his detention said.
In addition, the jail had transferred his cellmate and allowed Mr. Epstein to be housed alone in a cell just two weeks after he had been taken off suicide watch, a decision that also violated the jail’s normal procedure, two officials said.
The disclosures about apparent failures in Mr. Epstein’s detention at the Metropolitan Correctional Center deepened questions about his suicide and are very likely to be the focus of inquiries by the Justice Department and the F.B.I.

There was a conscious decision to allow this to happen...

I am the first to call out a conspiracy theory as nonsense... but you really have to go through contortions to dismiss this as an innocent mistake...