One of those two individuals said he was told by those close to the Saudi leadership that the kingdom will claim that rogue operatives killed Khashoggi during an interrogation or a rendition attempt that went horribly awry.
One source says the report will likely conclude that the operation was carried out without clearance and transparency and that those involved will be held responsible.
Saudi authorities have yet to give a clear explanation of Khashoggi's fate, while several countries - particularly Turkey, the USA, and the U.K - are pressing for the case to be cleared up as soon as possible.
The New York Times, citing a person familiar with the Saudi plans, reported the crown prince had approved an interrogation or rendition of Khashoggi back to Saudi Arabia.
A joint Turkish-Saudi team has entered the Saudi consulate in Turkey today to conduct a search, according to Reuters.
"If US sanctions are imposed on Saudi Arabia, we will be facing an economic disaster that would rock the entire world", said Aldakhil.
Trump said Pompeo may go to Turkey after Saudi Arabia.
"And princesses, fleeing Saudi Arabia", Alhadj said.
"I just spoke with the King of Saudi Arabia who denies any knowledge to the Saudi Arabian citizen", Mr Trump said to reporters on Monday.
Trump called Pompeo on Sunday night and asked him to have face-to-face meetings with the Saudi leaders, State Department spokeswoman Heather Nauert said.
They include the CEO of Uber, a company in which Saudi Arabia has invested billions of dollars; billionaire Richard Branson of the Virgin Group; JPMorgan Chase & Co.
"We are going to leave nothing uncovered", Trump told reporters. "And incidentally in this whole case of Khashoggi, [Turkish President Recep] Erdogan doesn't come into this case with what we used to say 'clean hands.' He has a awful human rights record".
Exerting downward pressure on prices, Friday's monthly report from the International Energy Agency said the market looked "adequately supplied for now" and cut its forecasts for world oil demand growth this year and next.
"The objective of (Sunday's) message broadcasted by the Saudi national media is twofold: one goal is to satisfy the domestic public opinion that Saudi Arabia and its royal family will not be humiliated and the other goal is to send a message to the US", Mitreski, researcher at the University of Sydney, told AFP.
Ford Motor Co Chairman Bill Ford also pulled out, as well as media organizations like CNN and Bloomberg which once served as sponsors of the conference.