"That's nobody's business except Saudi Arabia". Senior officials say the refusal on the matter has underscored the need to get to the bottom of what motivates the Trump foreign policy.
He was a strong critic of the Saudi government.
The crown prince is the next in line to the Saudi throne behind his ailing father King Salman, and has become the de facto ruler of Saudi Arabia. The brutal killing, described by Turkish and U.S. officials as an elaborate plot - has drawn an worldwide outcry about press freedom and Saudi government tactics to quell criticism.
The conversation appears to have been recently analysed as part of an effort by USA intelligence agencies to find proof of who was responsible for Khashoggi's death.
After denying for several weeks that Khashoggi was killed in the Saudi consulate, Saudi Arabia indicted 11 people in the killing, including several officials close to the crown prince, and is seeking the death penalty against five of them. "We know this was not authorised operation...it is a horrific crime and the whole country is outraged by this crime", he said. His remains have still not been found. Not long after the journalist's murder, a preliminary investigation by the Central Intelligence Agency found it had been carried out under orders from the prince.
"I can't comment on reports based on anonymous sources", al-Jubeir said.
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Representatives for Chatham, Cooperman, AMI and the White House didn't immediately respond to requests for comment on Thursday. Last month, Bezos and his wife, MacKenzie, announced that they were divorcing .
The journalist is believed to have been strangled to death by a team of Saudi killers linked to Prince Mohammed, with his body then dismembered and smuggled out of the consulate or dissolved in acid, according to intelligence reports.
Agnes Callamard, an independent United Nations human rights expert, has criticized the kingdom for its lack of transparency in the proceedings over the grisly slaying.
Saudi Deputy Public Prosecutor Shalaan bin Rajih Shalaan said investigators had concluded an intelligence officer ordered Khashoggi's murder, applying a lethal injection inside the consulate.
While US congressmen have been urging the Trump administration to sanction Saudi Arabia, Trump has been defending the crown prince.
It is unclear if any of the 17 are on trial.
The State Department said Thursday Washington had already taken action, pointing to last year's revocation of visas for almost two dozen Saudi officials and the freezing of assets of 17 others. U.S. lawmakers are clamoring for a strong response to Khashoggi's murder despite President Trump's lackluster response to the case.