Turkish intelligence officers have told USA officials they believe Mutreb was speaking to one of the prince's aides, it reported.
Turkey had 'allowed our intelligence services to hear recordings, and at no moment was there any reference to the mentioned phrase in the such recordings, ' the statement added.
Ms Nauert said that Secretary Pompeo, who visited the kingdom last month to discuss the matter with the king and the prince, said the chief United States diplomat again discussed the matter with the prince on Sunday.
Canada's intelligence agency has heard audio recordings that Turkey says are a crucial part of its evidence that Saudi operatives murdered journalist Jamal Khashoggi, Prime Minister Justin Trudeau said on Monday - the first time a leader of a Western nation has acknowledged receiving the recordings. Media reports have suggested that his body could have been chemically dissolved.
On Monday, Al Jazeera quoting a senior journalist of Turkish Sabah newspaper said the audio recording from inside the Saudi consulate in Istanbul also included Khashoggi's last words: "I'm suffocating".
The growing evidence that Crown Prince Mohammed was involved in the killing of Khashoggi is certain to intensify pressure on the White House, which appeared intent on relying on a lack of concrete proof of his involvement to preserve its relationship with him.
Mr Trudeau said he had not personally listened to the tapes, but said he had been speaking with the Turkish President.
Turkish sources had said previously that authorities have an audio recording purportedly documenting the murder.
He said the authorities have already arrested 18 suspects in Saudi Arabia and there have been layoffs in the security apparatus.
"We are in discussions with our like-minded allies as to the next steps with regard to Saudi Arabia", Trudeau said.
Trudeau said Monday in Paris he has not personally heard the recording that Turkish officials have also provided to allies such as the US and Britain in recent days, though he said he had been told about its contents.
But Pompeo and US President Donald Trump have also both emphasized America's important commercial, strategic and national security relationships with the petro-state.
Khashoggi, a Washington Post columnist critical of the Saudi government disappeared at the Saudi consulate in Istanbul on October 2.
The Foreign Secretary is seeking to build support among global, and particularly regional, partners for new action in the UN Security Council to bolster the UN-led peace process, following his meeting with UN Special Envoy for Yemen Martin Griffiths at the end of October.