The Justice Department is investigating fake Electoral College certificates that claimed Donald Trump to be the winner of the 2020 presidential election. The certificates were sent to the National Archives and had signatures from individuals purporting to be Trump electors in at least seven states that Joe Biden won.

The Washington Examiner reports:

“Our prosecutors are looking at those, and I can’t say anything more on ongoing investigations,” Deputy Attorney General Lisa Monaco told CNN on Tuesday. “But more broadly, the attorney general has been clear, we are going to follow the facts and the law wherever they lead to address conduct of any kind and at any level that is part of an assault on our democracy.”

Two weeks ago, Michigan Attorney General Dana Nessel announced she had turned over information to federal prosecutors from a yearlong investigation she conducted into 16 Republicans whose signatures were placed on fake 2020 electoral certificates in her state. New Mexico Attorney General Hector Balderas also announced that week that he referred the fake certificates to federal prosecutors.

The documents, which were first published last March by government watchdog American Oversight, purported to be electoral certificates from Arizona, Georgia, Michigan, Nevada, New Mexico, Pennsylvania, and Wisconsin. The fake documents had no impact on the outcome of the 2020 election. The real electoral certificates from those states can be found on the National Archives website.

Some of the documents were signed by top Republican Party officials in those states. The documents that American Oversight obtained for New Mexico and Pennsylvania contained a note arguing that the certificates were made in case it was later determined that Trump was the winner in those states.

The House Select Committee investigating the Jan. 6 riot could also choose to investigate the certificates.