"I was appalled and frankly angry to learn of the ( Metropolitan Correctional Centre's) failure to adequately secure this prisoner", Barr said in a speech in New Orleans.
In his remarks on Monday at the Grand Lodge Fraternal Order of Police's National Biennial Conference, Barr said the criminal case against Epstein was personally important to him and that his death denied his victims the chance to confront Epstein in a courtroom.
Barr also said the Justice Department would continue investigation in the possible accomplices of Epstein in his alleged sex crimes.
A Justice Department official who spoke on the condition of anonymity says Barr has recused himself from any review of the 2008 plea deal involved in the federal investigation into Epstein.
Lawyers for those potential defendants are likely to seize on wording in Epstein's non-prosecution agreement that appears to tie the hands of the entire Justice Department when it comes to indicting co-conspirators, said David Weinstein, a former federal prosecutor in Miami who has followed the case closely. But correctional officers had not done so for "several" hours before he was found by staff as they were handing out breakfast to inmates, a person familiar with the matter said.
The Department of Justice announced on Tuesday that the warden of the correction center was reassigned and two staff members were put on administrative leave while the investigation into the financier's death is ongoing.
Epstein, 66, was found hanging in his cell around 6:30 a.m. Saturday, according to officials familiar with the matter.
Dr. Barbara Sampson said a city medical examiner performed the autopsy Sunday while a private pathologist observed the examination at the request of Epstein's representatives.
Jerrold Nadler, a New York Democrat, and Doug Collins, a Georgia Republican, asked for details on Epstein's assessment about his risk of suicide and whether or not the facility had rooms specifically for inmates on suicide watch.
His side of the deal saw him agree to plead guilty to a state-level charges of solicitation of prostitution and procurement of minors for prostitution.
We should wait for answers on how Epstein's life ended.
The hulking former Briarcliff Manor cop told investigators that he didn't hear anything at the time and wasn't responsible for Epstein's injuries, sources previously told The Post.
A New York Times investigation published previous year detailed this practice, under which federal prisons are so strapped for correctional officers that they regularly compel teachers, nurses, secretaries, and other support staff members to step in.
The decision by officials at the Bureau of Prisons not to keep Mr Epstein on a suicide watch has come under scrutiny.
The Bureau of Prisons declined to comment.
Conspiracy theories about Epstein's death have been espoused by just about everyone on the political spectrum, including President Donald Trump.