Trump pledged unspecified "severe punishment" in a "60 Minutes" interview airing Sunday should the USA determine Saudi involvement in the disappearance of Khashoggi, who had written columns critical of Saudi Crown Prince Mohammed bin Salman.
President Donald Trump has declared the US will uncover the truth about what happened to journalist and USA resident Jamal Khashoggi, whose possible murder at Saudi hands after disappearing in Istanbul has captured worldwide attention.
In the first Saudi ministerial reaction to the accusations about Khashoggi's killing, Interior Minister Prince Abdel Aziz bin Saud bin Nayef said that "what has been circulating about orders to kill him are lies and baseless allegations". "He (Trump) will take action".
"So, we do that, we really are hurting our country a lot more than we're hurting Saudi Arabia".
As investors took fright, Saudi stocks tumbled by around 7% at one point on Sunday, wiping out their gains for 2018.
According to a prince belonging to Saudi Royal family, 5 members of the Royal family who raised voice against the disappearance of Jamal Khashoggi have been put in jail.
Storm Isaac to weaken gradually over next few days: NHC
Isaac is forecast to gradually weaken over the next few days, and could degenerate into a tropical wave at any time. At another gas station, a long line of vehicles followed a tanker truck that pulled in with 8,800 gallons of fuel.
In a column published just after the SPA statement, Saudi-owned Al Arabiya channel's General Manager Turki Aldakhil warned that imposing sanctions on the world's largest oil exporter could spark global economic disaster.
Saudi Arabia Sunday warned against threats to punish it over last week's disappearance of journalist Jamal Khashoggi, as European and US allies piled on pressure.
And in what could be an even bigger withdrawal from the event, Treasury Secretary Steven Mnuchin is now weighing whether to attend - after saying last week he did plan to go.
This begs the question: just why is the US government involved in arms sales?
Before Saturday's comments, Trump had been reluctant to criticise Saudi Arabia and had said on Thursday that he was against cancelling the $110-billion US-Saudi arms deal over the journalist's disappearance.
Saudi Crown prince Mohammed bin Salman "freaked out" in August at Canada's criticism of its crackdown on female human rights activists, showing New Zealand would be running risks if it issued any snubs, he said.
As for the Saudi-Turkey investigation into Khashoggi, I expect it to go along national lines.
He said any response to Khashoggi's killing "needs to be strong, not symbolic", including the possibility of cutting off USA weapons sales to Riyadh, or it would undermine the U.S.'s moral standing in the world.
He told CBS: "We're going to get to the bottom of it".