Several former Georgia district attorneys told The Daily Beast that investigators are likely relying on a state law that makes it a felony to “knowingly and willfully” make a false statement on “any matter within the jurisdiction” of the state government. The criminal charge carries a punishment of one to five years in prison.

Applying this state law to the former president’s attorney would be a beyond-rare strategy, former prosecutors say. But then again, so was Team Trump’s conduct after the election.

The Fulton DA’s public integrity team is said to be zeroing in on the wild claims Giuliani made to Georgia’s state legislators—an integral part of Trump’s multi-faceted attempt to overturn the 2020 election results by pressuring lawmakers and making court challenges. Also under review: Trump’s numerous erroneous assertions in his direct phone calls to Georgia Secretary of State Brad Raffensperger (first reported by The Washington Post) and his six-minute phone chat with an elections investigator (whose audio was made public by The Wall Street Journal).