Three of Jeffrey Epstein’s attorneys are not buying the New York City Medical Examiner’s ruling that the sex offender committed suicide August 10.

“We are not satisfied with the conclusions of the medical examiner. We will have a more complete response in the coming days,” the lawyers said in a joint statement Friday evening after the chief medical examiner ruled out foul play earlier in the day. The three had hired a private pathologist to observe the autopsy.

It is “indisputable that the authorities violated their own protocols,” their statement read. Lawyers Martin G. Weinberg, Reid Weingarten, and Michael Miller said they would conduct their own investigation, and will seek court help, as necessary, to get access to available “pivotal” MCC video of areas from around Epstein’s cell.

A week ago, guards found Epstein at about 6:30 a.m. in his cell. It appeared that he had tied a bed sheet to his neck and to an upper bunk. The autopsy found that he had leaned or fallen forward with enough force to have broken several bones in his neck, though many experts have said those broken bones would normally indicate a greater chance of homicidal strangulation than a self-inflicted injury.

Epstein’s death “is the subject of four federal investigations, including by the Justice Department’s inspector general and the F.B.I.,” according to The New York Times.

Lack of MCC staff cooperation

An anonymous official with the Department of Justice told the Associated Press that several individuals, including jail staff members believed to have pertinent information to the investigation, are not cooperating. The official indicated they have not yet been interviewed by the FBI, but that their lack of cooperation is a problem as investigators try to determine the full picture surrounding Epstein’s suicide.