Federal prosecutors on Tuesday reportedly filed criminal charges against freshman Rep. George Santos (RN.Y.).

The charges were filed under seal, according to CNN, and it was not immediately clear what crimes he is accused of. However, questions have been raised about how Santos financed his political campaign.

A spokesman for the U.S. Attorney for the Eastern District of New York did not immediately respond to a request for comment.

Numerous other allegations of criminal activity circulated around the congressman, whose lies about his background even led some members of his own party to demand Santos’ resignation from Congress.

This latest news item will be updated.