President Donald Trump has tweeted that he did not record his conversations with former FBI Director James Comey.

Trump tweeted back in May that “Comey better hope that there are no ‘tapes'” of conversations between the two men.

Thursday, he tweeted that if there were recordings of his conversations with Comey, he was unaware of their existence. Trump also indicated he did not personally record the conversations.

From The Hill:

Since the initial tweet, Trump and his staff had evaded questions on whether they secretly recorded the president’s private conversations with Comey.

The existence of such tapes would have been explosive. The discovery of a secret recording system in the White House under then-President Richard Nixon helped trigger his resignation amid the Watergate scandal.

No president since is known to have recorded conversations in the Oval Office.