U.S. President Donald Trump, however, was an exception.
When asked if he found the Saudi regime's explanation for the death credible, he replied: "I do".
International human rights watchdog Amnesty International has said the Saudi account was "not trustworthy" and called on Riyadh to produce Khashoggi's body so that independent forensic experts might determine the cause of his death.
Media reports said Pompeo heard the recording earlier in the week when he visited Turkey.
The investigation is still underway and 18 Saudi nationals have been arrested so far, the authorities said.
"To say that I am sceptical of the new Saudi narrative about Mr Khashoggi is an understatement", he said.
Khashoggi, a critic of the crown prince Mohammad bin Salman, went missing after entering the Saudi consulate in Istanbul on 2 October to obtain documents for his upcoming marriage.
After days of denying to know his whereabouts, Saudi Arabia on Saturday claimed Khashoggi was killed during a fight inside the consulate.
"Discussions between citizen Jamal Khashoggi and those who met him while he was in the Saudi Consulate in Istanbul led to a brawl and a fistfight, which led to his death", the report said, according to multiple US media outlets.
Standing outside the Saudi consulate in Istanbul, the head of a media group said the "authority that gave the orders" in the killing of Khashoggi should be punished.
Saudi Arabia is the UK's key ally in the region and also a significant trading partner.
Oil Rises To Approximately $80
The country made the decision to cut its oil imports long before USA sanctions against Iran take effect in November 4. This week, data from the EIA showed that the inventories had climbed to more than 9.5 million barrels.
The official, Leyla Sahin Usta, said it would have been "more valuable" if Saudi officials had earlier admitted that Khashoggi was killed in its diplomatic post.
In the U.S., Sen.
What is Saudi Arabia's version of events?
Turkey Says Will Reveal It All In Turkey, where local media have quoted unnamed officials as saying they have evidence Khashoggi was tortured and dismembered by Saudi agents, officials were skeptical and vowed to make the results of their own investigation public soon.
The Saudis first dismissed the claims as baseless, without providing an explanation as to how he disappeared after entering the consulate on October 2.
UN Secretary-General Antonio Guterres expressed deep concern over the Saudi confirmation of Khashoggi's death and called for the transparent investigation into the case. Saudi King Salman also had a plan to restructure the kingdom's intelligence services.
The crisis prompted the king to intervene, five sources with links to the Saudi royal family told Reuters.
Saudi Arabia is a major weapons buyer, spending US$69.4 billion on military purchases past year, according to the Stockholm International Peace Research Institute.
"Let the whole world watch the funeral of Jamal Khashoggi, who was killed in a dark room in a horrific manner".
Twitter was never able to prove he had passed on information, the Times reported, though it fired Alzabarah in December 2015 and sent alerts to a few dozen users that read, "As a precaution, we are alerting you that your Twitter account is one of a small group of accounts that may have been targeted by state-sponsored actors".
By not reviewing those materials, the top USA diplomat is not in an obvious position to refute or confirm the Saudi account, said diplomats familiar with the situation. "It's just starting", Turan Kışlakçı, the president of the Arab Turkish Media Association, said in a speech.