"As I mentioned, the President has nothing further to add on that," as Spicer did not deny any taping has taken place in the Trump White House.
On Capitol Hill, Democrats immediately seized on the matter, demanding that the President turn over any tapes to Congress.
"Mr. President, if there are "tapes" relevant to the Comey firing, it's because you made them and they should be provided to Congress," said Rep. Adam Schiff (D-CA), the top Democrat on the House Intelligence Committee.
"Are there tapes, Donald Trump?" asked Rep. Diana Degette (D-CO). "If so, the American people deserve to hear them."
The tweet about "tapes" immediately invoked memories of the Oval Office tapes that became a central part of the battle over President Richard Nixon, a taping system that was not known about until being uncovered by hearings on Watergate.
If there are indeed tapes of such conversations, Congress could try to subpoena those for any investigation.
Democrats officially asked for the tapes in a letter to the White House Counsel this afternoon.
The letter from Rep. Elijah Cummings (D-MD) and Rep. John Conyers (D-MI), requested "copies of all recordings in possession of the White House regarding this matter."