GARY â After months of delay, federal prosecutors on Thursday filed an indictment against an ex-Gary city employee and close confidant of former Mayor Karen Freeman-Wilson for wire fraud. Mary Cossey, a serial filer in bankruptcy court from Munster, was charged Aug. 4 by way of information in U.S. District Court, but for months, the U.S. Attorney's Office had agreed to hold off formally indicting Cossey in the fraud case. Cossey is scheduled to be arraigned Friday on three counts of wire fraud. It has not been disclosed why the federal government delayed Cossey's formal indictment by six months, but her attorney, Scott King, has suggested to The Times it was a "pressure tactic" and they may have been relying on Cossey for information in a broader investigation into someone else.