The U.S. attorney’s office in the Eastern District of Virginia has opened a criminal investigation into allegations that the Washington Commanders engaged in financial improprieties.

Prosecutors are reportedly focused on several areas and that the inquiry was triggered by a letter the House Committee on Oversight and Reform sent to the Federal Trade Commission and several attorneys general in April that alleged deceptive business practices. Attorneys general in Virginia and Washington, D.C., also are investigating allegations of financial impropriety.

The House committee said in its letter to the FTC that it had found evidence of deceptive business practices over the span of more than a decade, including withholding ticket revenue from visiting teams and refundable deposits from fans. The committee outlined, through the testimony of former employees and access to emails and documents, a pattern of financial impropriety by owner Dan Snyder and team executives. At one point in 2016, the team retained up to $5 million from 2,000 season-ticket holders while also concealing sharable revenue from the league, according to the committee.

Also on Wednesday, Dan and Tanya Snyder announced that they have hired Bank of America Securities to explore potential transactions involving the team. It’s not clear what those transactions might be, whether it was the sale of the team or they are pursuing minority partners.