After two previous criminal indictments this year, former President Donald Trump could be the subject of an unprecedented third indictment.

Trump said Tuesday that he received a target letter from Special Counsel Jack Smith related to a grand jury investigation of the Jan. 6, 2021 Capitol riot, according to The New York Times.

Trump became the first former president to face charges earlier this year when he was charged in April in connection with a hush money payment made to an adult film star. In June, he pleaded not guilty to a second set of criminal charges in federal court tied to classified documents found at his Mar-a-Lago residence.