Accused sex trafficker Jeffrey Epstein was found injured in his cell in a federal jail in lower Manhattan, NBC News reported Wednesday night.

The wealthy financier Epstein, who was arrested in early July in federal charges, was on the floor of his cell in a fetal position when he was discovered, sources told NBC.

He was semi-conscious and had marks on his neck when he was found.

Epstein may have tried to hang himself, according to sources who spoke with WNBC-TV.

But another source said that Epstein’s injuries were not serious, and raised the possibility that he may have used the incident to obtain a transfer from jail.

A fourth source who spoke with NBC said that officials have not ruled out the prospect that Epstein was assaulted in the Metropolitan Correctional Center .

Another inmate in that jail, where Epstein is being held without bail, has been questioned about the incident.

NBC reported that the inmate questioned is Nicholas Tartaglione, a former Orange County, New York, police officer who was arrested in December 2016 and accused of killing four men in an alleged cocaine distribution conspiracy and then burying their bodies in the yard of his upstate home.

Spokesman for the Metropolitan Correctional Center, the U.S. Bureau of Prison and he U.S Attorney’s Office for the Southern District of New York, which is prosecuting Epstein, did not immediately respond to requests for comment. CNBC has also reached out to Epstein’s lawyers requesting comment.

Epstein, 66, was indicted this month on charges of sex trafficking and conspiracy to commit sex trafficking in U.S. District Court in Manhattan.

A judge last week denied him bail of upwards of $100 million because of his possible danger to women if released, and his risk of flight due to his vast wealth.

Epstein’s lawyers on Monday notifed Judge Richard Berman that they plan to appeal his bail denial.

Epstein, a former friend of Presidents Donald Trump and Bill Clinton, has pleaded not guilty in the case.

Prosecutors say he sexually abused dozens of underage girls from 2002 through 2005 at his New York City townhouse and Palm Beach, Florida, who visited him under the guise of giving him massages.

Epstein pleaded guilty in 2008 to state prostitution charges in Florida related to an underage girl.

He was not prosecuted on federal charges at the time due to a non-prosecution agreement he reached with the U.S. Attorney’s Office in Miami, which was headed at the time by Alex Acosta. Acosta resigned this month as U.S. Labor secretary after controversy over that deal.