A group of Jeffrey Epstein’s victims is urging the U.S. government to initiate an internal investigation into the billionaire’s extensive trafficking operation that spanned decades.

Specifically, they want to know why the FBI failed to investigate and arrest the late billionaire on a variety of sex-related charges involving underage girls, according to RadarOnline.com.

Jennifer Freeman, a prominent attorney based in New York, has authored a comprehensive 15-page letter addressed to U.S. Attorney General Merrick B. Garland and the Department of Justice’s Inspector General’s Office.

In the letter, Freeman accuses the FBI of disregarding substantial evidence, which has been accessible since 1996 and could have resulted in Epstein’s incarceration many years ago. The letter highlights the attorney’s concerns regarding the FBI’s alleged negligence in handling the case, RadarOnline.com reported.

“The FBI utterly failed to investigate serious allegations involving Epstein’s, and perhaps others’, child sex abuse materials (CSAM), significant additional criminality which, until recently, has been disregarded, disrespected, and essentially denied,” Freeman said in the letter.

“In August of 1996 one of our clients, Maria Farmer, reported to the FBI that Epstein and Ghislaine Maxwell had sexually abused her and that the two of them, together with others, were committing multiple, serious, sexual abuse crimes, including hands-on sexual abuse, against minors and vulnerable young women,” the letter continued.

“In addition, she reported to the FBI that Epstein, and perhaps others, appeared to be engaged in the production, possession, and distribution of sexually suggestive or exploitative images of children that could constitute CSAM,” the letter added.

The outlet noted further:

The bombshell letter comes after RadarOnline.com exclusively reported last month that the estate of the now-deceased Epstein discovered a trove of graphic never-before-seen explicit photographs and videos.

The cache was unearthed as part of two big-bucks federal lawsuits filed by an anonymous victim and the U.S. Virgin Islands accusing JPMorgan Chase of turning a “blind-eye” to Epstein’s operation which paid off victims and associates through dummy corporations set up with the banking giant.

Ironically, New York Federal Judge Jed S. Rakoff ordered parties to immediately call none other than the FBI if any of the images verge on being illegal.

After enduring abuse by Epstein and Maxwell, his currently incarcerated associate, Farmer came forward and reported Epstein’s crimes to the FBI in 1996. These incidents took place at the Ohio estate of billionaire Les Wexner, who had employed Epstein as a money manager, RadarOnline.com noted.

Following her report accusing Epstein of threatening her and stealing her artwork, which included photographs of her partially dressed 11-year-old sister, Farmer was instructed by the New York City Police Department to contact the FBI, the outlet noted further.

“From 2005 to 2008, dozens of survivors, including Ms. Farmer, presented substantial evidence to the FBI of Epstein’s sex trafficking and sexually inappropriate images of children,” said Freeman, who noted in the letter that two FBI agents conducted an extensive interview with Farmer in 2006.

“After the slap-on-the-wrist sentence, Epstein and others continued their criminal enterprise, while the FBI did little more for another decade,” she noted.

Disclaimer: This article may contain commentary which reflects the author’s opinion.