Among the broken bones was reportedly Epstein's hyoid bone — a break more common in homicidal strangulations than suicide, The Washington Post said.
The two guards also allegedly falsified log entries to show they had regularly checked on inmates — though they hadn't actually done so.
One of the people guarding Epstein was not a prison officer, according to reports.
The British socialite faces charges over her alleged role in the sexual exploitation and abuse of girls by disgraced financier Jeffrey Epstein.
Epstein was found dead in a Manhattan facility on Saturday in an apparent suicide.
There Are 'Thousands And Thousands' Of Other Documents On Epstein Case That Could Implicate Co-Conspirators: Report Claims
Miami Herald reporter Julie K. Brown credited with helping instigate a new investigation of Epstein.
The US president retweeted multiple unfounded claims hours after convicted sex offender Jeffrey Epstein's apparent suicide.
The disgraced financier had been put on suicide watch following an incident last month, however he was reportedly taken off it at the end of July.
The billionaire was accused of luring dozens of girls as young as 14 to his luxury homes and paying them for sex acts.
Buckingham Palace has said the allegations are “categorically untrue”.