The two guards charged with watching billionaire Jeffrey Epstein, accused of pedophilia and child trafficking, during the night of his death could face criminal charges by the U.S. Department of Justice.

It is suspected that the guards who were supposed to check the prisoner’s condition every half hour, as established, did not do so. Prosecutors offered them the option of pleading guilty to the charges, but rejected the offer, according to The Associated Press.

After its rejection, the Justice Department would be considering filing criminal charges against those responsible for the safety of the dead accused, CBS News reported.

Epstein’s death was qualified as suicide, but Attorney General William Barr said investigators found “serious irregularities” in the jail where he perished.

In turn, Michael Baden, a pathologist with more than 50 years of experience hired by Epstein’s brother, noted that the billionaire exhibited two fractures in the left and right sides of his larynx, around Adam’s apple, and above this a fracture in the left hyoid bone.

He also said that these injuries are not the result of suicide but homicidal strangulation, as well as the rare hemorrhages in the eyes of the accused who died in his cell.

Epstein was previously charged of operating a child sex trafficking ring, and in the new case, he was linked to rich, powerful and famous people, including former President Bill Clinton, billionaire Bill Gates among others.

Sen. Ben Sasse (R-Neb.), turned to the director of the Federal Bureau of Prisons for answers about the death of the convicted sex offender.

“Epstein’s death makes it significantly more difficult to prosecute his co-conspirators,” Sasse said, adding, “Wealthy and powerful men raped innocent children, and it is an outrage that so much of the evidence of these crimes died with Epstein while in your agency’s custody,” according to the Washington Examiner.