The legislator must appear this Wednesday in a New York court, according to CNN. Santos was elected representing a district that includes parts of Long Island and Queens.

The exact nature of the charges is not yet known, but the FBI and Justice Department public integrity prosecutors in New York and Washington have been examining allegations of false statements in Santos' campaign finance documents. The congressman has admitted to making some misleading claims about his education and financial situation, but he continues to deny the most serious allegations and has flatly refused to turn over his congressional act.