Now, the man is facing charges of his own for allegedly impersonating an FBI agent. Anderson was detained after allegedly throwing documents at BOP staff, per the complaint. UNITED STATES DISTRICT COURT EASTERN DISTRICT OF NEW YORKAnderson is set to be arraigned in federal court in Brooklyn on Thursday, Jan. 29. He is due back in federal court on Friday, Jan. 30 for a status conference. In a statement, Mangione's lawyer, Karen Friedman Agnifilo, called the state's request "unrealistic" given the defense team "will require the remainder of the year to prepare" for the federal trial.