Soon after talking with Saudi Crown Prince Mohammed bin Salman over phone, Trump in a tweet said that answers related to Khashoggi's disappearance would be forthcoming shortly.
State-run media in Saudi Arabia acknowledged on Saturday that dissident journalist Jamal Khashoggi had been killed inside the country's consulate in Istanbul, Turkey, two weeks after his disappearance sparked a global furor.
Earlier on Sunday, a senior Saudi government official told Reuters the Riyadh critic was killed after being put in a chokehold. He changed his tone once again late this week, raising the prospect of sanctions against Riyadh.
Saudi officials said on Saturday that Washington Post columnist Khashoggi died in a fight in its Istanbul consulate.
"But it was a big first step, it was a good first step".
British Foreign Minister Jeremy Hunt said on Friday allegations regarding Mr Khashoggi would be totally unacceptable if true but any response by Britain would be "considered". Saudi Arabia ranked sixth a year ago with approved sales of 254 million euros ($292 million), mostly reflecting deliveries of patrol boats, according to a government report published in June.
"I don't think we should meddle and pick up the pieces in the situation with the Saudi journalist", Peskov said.
Democratic Representative Adam Schiff of California said Saudi Arabia's claim that Mr Khashoggi died in a brawl was not credible.
Pressed on whether he thought Britain was at risk of hypocrisy if the Government failed to hold Saudi Arabia to the same standards demanded of Russian Federation following the Salisbury attack, Mr Williamson said: "Wherever there is an injustice done there has to be action that is undertaken and there has to be a proper and formal investigation". Why were 18 people arrested?
Saudi officials have roundly denied that the crown prince had any involvement in the affair.
The European Union said the emerging details of Khashoggi's death are "deeply troubling" and said the continuing investigation should bring "proper clarity on the circumstances of the killing and ensure full accountability of all those responsible for it".
"We'd like to find out where it is and what happened", Trump said.
On the day Mr Khashoggi disappeared, Ms Cengiz waited for hours outside the consulate for him and, when he did not return, got in touch with the authorities as he had instructed her to do, she later said.
Turan Kislakci, president of the Turkish Arab Media Association, said Khashoggi was "slaughtered by bloody murderers" and that his group wants "true justice" for its slain colleague.
Saudi Arabia's preliminary investigation "demonstrates the Kingdom's keenest and commitment to finding the truth of this incident and taking the required legal action against those involved", Egypt's foreign ministry said in a statement.