Noticeably absent from discussions was the Saudi crown prince, Mohammed bin Salman, about whom Khashoggi wrote critically for the Washington Post and whose rise to power prompted the writer to go into a self-imposed exile in the US.
Graham, discussing the feared killing of Saudi journalist and USA resident Jamal Khashoggi, a critic of the monarchy, was backed by Marco Rubio, another of the top Republicans in the upper house, who described the crown prince as "young and aggressive".
Turkish President Tayyip Erdogan has suggested parts of the consulate had been repainted since the disappearance of the journalist, who was a critic of the Saudi regime.
U.S. media reported on Monday that the oil-rich kingdom is considering an admission that Khashoggi died after an interrogation that went wrong during an intended abduction.
An expected search Tuesday of the consul general's residence did not take place, according to a deputy police officer near the building who spoke to CNN's team in Istanbul.
"Who knows?" But CNN cited two sources as saying the Saudis are preparing a report that his death resulted from a botched interrogation, while the Wall Street Journal said the kingdom was weighing whether to say that rogue operatives killed Khashoggi by mistake.
This comes after it was reported a large truck was seen leaving the consulate and parking at a Saudi official's home just hours after Khashoggi's disappearance.
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The Turkish inspection team included a prosecutor, a deputy prosecutor, anti-terror police and forensic experts, the state-run Anadolu news agency reported.
Authorities have offered no time frame for those searches.
Khashoggi has written extensively for the Post about Saudi Arabia, criticizing its war in Yemen, its recent diplomatic spat with Canada and its arrest of women's rights activists after the lifting of a driving ban for women. Turkish officials have not said if any significant evidence was found. Security cameras on the surrounding streets did not see him leave by foot, Turkish officials say. "Just because a country we're working with did it doesn't mean the U.S. can just shrug its shoulders and say nothing happened here".
The newspaper on which Khashoggi worked as a columnist has mentioned that anonymous officials have hinted towards the evidence contained within these files.
The kingdom has not responded to repeated requests for comment from The Associated Press.
He tweeted "For the record, I have no financial interests in Saudi Arabia (or Russian Federation, for that matter)".
US Secretary of State Mike Pompeo, left, meets with Saudi Arabia's King Salman in Riyadh.
President Trump is also correct when he says thousands of United States jobs would be lost, with China and Russian Federation to be among those lining up to replace them.
The business summit is being hosted by Saudi Arabia's Public Investment Fund, which has invested in some Silicon Valley tech firms such as Uber and other startups. Germany, Britain and France issued a joint statement over the weekend expressing "grave concern" and calling for a credible investigation to ensure those responsible for the disappearance "are held to account".