Following his announcement of an impending investigation, Attorney General William Barr has hinted at “serious irregularities” found in the prison that held Jeffrey Epstein at the time of his apparent suicide.

“We are now learning of serious irregularities at this facility that are deeply concerning and demand a thorough investigation,” Barr said Monday during a national policing conference in New Orleans.

Barr announced an investigation Saturday into Epstein's death. He said that he was “appalled” by the situation, and sources close to Barr said that he was “determined to get to the bottom of what happened.”

“Let me assure you that this case will continue on against anyone who was complicit with Epstein. Any co-conspirators should not rest easy. The victims deserve justice and they will get it,” Barr said.

Epstein, 66, was arrested in early July on charges of trafficking and engaging in sexual acts with underage girls. The multimillionaire financier had pleaded not guilty and was awaiting trial in 2020. Following what was suspected to be an earlier suicide attempt, Epstein was found dead in his cell at the Metropolitan Correctional Center in New York of an “apparent suicide.”

Despite reports after the first attempt stating that Epstein would be closely watched, reports indicate that he was not on suicide watch at the time of his death.

The New York City medical examiner finished an autopsy of Epstein on Sunday night but the cause of his death "is pending further information." A private pathologist observed the examination, as well.

Sex offender Jeffrey Epstein Jeffrey Epstein in Cambridge, MA on 9/8/04. Epstein is connected with several prominent people including politicians, actors and academics. Epstein was convicted of having sex with an underaged woman. Photo: Rick Friedman/Rick Friedman Photography/Corbis via Getty Images