I think this might lend some credence to:
Or got jumped by inmates at least once (that we know of).
been looking for this since Epstein was offed.
Trying to find out frequency and prevalance of suicide in federal prisons.
"Between 2001 and 2014, the majority of federal prisoners' deaths (88 percent) were attributed to natural causes. During this period, unnatural deaths accounted for less than 10 percent of all federal prisoner deaths, which includes suicides (four percent), homicides (three percent) and accidents (one percent)."
This was the most recent data I could find here:
https://www.bjs.gov/content/pub/press/msp0114stpr.cfm