That doesn't mean, however, that the recordings don't exist.
The Wall Street Journal filed a Freedom of Information Act request May 15 asking for recordings or transcripts made within the White House since Trump assumed the presidency January 20. Comey told Congress last week that Trump urged him to drop a probe of former National Security Adviser Michael Flynn.
Reuters' Ayesha Rascoe asked Spicer at his press briefing Monday. It adds that the FOIA request "doesn't exclude the possibility that recordings could have been created by another entity".
After receiving the request from the Wall Street Journal, the Secret Service started searching for responsive records.
Members of the Trump White House have since been mum on any questions about the existence of the recorded conversations between Mr. Trump and Comey.More news: Qatar tells Gulf residents they are free to stay
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Mr. Comey became the subject of discussion in Washington over his testimony in front of the Senate Intelligence Committee last week over Russian interference during the 2016 election. Trump strangely continued, "Oh, you're going to be very disappointed when you hear the answer, don't worry".
In questions on Friday, Trump refused to answer then said he would do so shortly. Trump said to reporters on Friday: "I'm not hinting anything". The Secret Service said a review of its main indices found no records related to the request.
Asked whether she would find out, Sanders joked that she would "look under the couches".
Trump, Spicer said, would further address the tapes "in due time", "as soon as possible" and "when he's ready to further discuss it". The Secret Service said this officially and did not want to comment more on this discussion.