U.S. prosecutors will file a criminal information in their case against accused swindler Bernard Madoff if he waives an indictment, a court document said on Friday.

Please take notice that the United States Attorney's Office will file an information upon the defendant's waiver of an indictment, the document in U.S. District Court in Manhattan said.

Madoff's lawyers were not immediately available to comment.

There was no indication when the new charges would be filed, but prosecutors had until March 13 to indict Madoff on expanded charges or reach a plea agreement.

(Reporting by Grant McCool; Editing by Lisa Von Ahn)