Federal prosecutors in New York reportedly sent grand jury subpoenas to more than a dozen workers at the Metropolitan Correctional Center where Jeffrey Epstein died.
Epstein, who was accused of sexually abusing dozens of teenage girls, killed himself in his cell earlier this month. Just two weeks before, Epstein was found semi-conscious in his cell and placed on suicide watch. But he reportedly was not on suicide watch at the time of his death.
The FBI and the Justice Department's inspector general are both investigating Epstein's death. Barr gave an update on the inquiry earlier this week.
"I will say that as I said before we have found serious irregularities at the center, but at the same time I have seen nothing that undercuts the finding of the medical examiner that this was a suicide," Barr said.
Additional reporting from Newsy affiliate CNN.