Wealthy financier Jeffrey Epstein was found on the floor of his jail cell with bruises on his neck early this week while awaiting trial on sex-trafficking charges, a person familiar with the matter said Thursday. Epstein, 66, was treated and, according to the U.S. Bureau of Prisons, remains in custody at the federal Metropolitan Correctional Center in New York City. In a statement, the bureau gave no other details and would not comment on Epstein’s condition.