Former President Donald Trump said Tuesday that he has received a letter informing him that he is a target of the Justice Department’s investigation into efforts to undo the results of the 2020 presidential election, an indication he could soon be indicted by federal prosecutors.

Trump made the claim in a post on his Truth Social platform, saying he got the target letter while with his family Sunday night.

Such a letter can precede an indictment and is used to advise people that prosecutors have evidence linking them to a crime; Trump received one ahead of being charged last month in a separate investigation into the mishandling of classified documents.

A spokesman for special counsel Jack Smith, whose office is leading the investigation, declined to comment.

Prosecutors have cast a broad net in investigating attempts by Trump and his allies to block the transfer of power to Democrat Joe Biden.

Trump, the dominant early frontrunner for the Republican presidential nomination, is scheduled to travel to Iowa Tuesday, where he is taping a town hall with Fox News host Sean Hannity.

Prosecutors in Georgia are conducting a separate investigation into efforts by Trump to reverse his election law in that state, with the top prosecutor in Fulton County signaling that she expects to announce charging decisions in the first several weeks since Sunday.

In his post, Trump wrote, “They have now effectively indicted me three times.... with a probably fourth coming from Atlanta” and added in capital letters, “This witch hunt is all about election interference and a complete and total (political) weaponization of law enforcement!”

Trump was indicted last month on 37 felony counts accusing him of illegally retaining hundreds of classified documents at Mar-a-Lago, his Florida estate. He has pleaded not guilty. A pretrial conference in that case was set for Tuesday in Fort Pierce, Fla.