A high-level delegation from the Defence and Security Organisation - whose sole task is to promote arms exports - was actually in Riyadh on October 2 - the day when Khashoggi was slain.
The following day the Post reports that he is missing. "The Saudi Public Prosecutor is still awaiting a response to these requests", an official from the Saudi embassy in Washington told CNN.
Saudi officials have rejected accusations that the crown prince ordered his murder in the Saudi consulate in Istanbul, in which Khashoggi's body was dismembered, removed from the building and handed over to an unidentified "local cooperator".
The Saudi-led coalition's airstrikes in Yemen have also come under intense scrutiny since Khashoggi's killing.
Last month, U.S. senators passed the measure that blamed the prince for Khashoggi's killing and called on Riyadh to "ensure appropriate accountability".
In the wake of the scandal, Saudi King Salman and Turkish President Recep Tayyip Erdogan agreed to coordinate their countries' investigations.
On October 24 the crown prince makes his first public comments on the affair, saying it is "very painful for all Saudis, it's a repulsive incident". "They are not transparent at all", the Turkish source told MEE.
The streaming giant said it was required to take down the episode after Saudi authorities said it violated the country's cybercrime statute. In November, the prosecutor's office said it had 21 suspects in custody. From 21 suspects, it charges 11.
The US has sanctioned 17 Saudi citizens in connection with the Khashoggi murder.
But Trump says there would be no change in Saudi-US relations with the Central Intelligence Agency having "nothing definitive".
"Ultimately, it's impossible to view any accountability that ignores the role of Crown Prince Mohammad bin Salman as legitimate or credible".
On December 13 the Senate adopts a resolution holding him responsible.
The killing of Khashoggi, who wrote columns critical of Prince Mohammed, has strained the decades-long ties the kingdom enjoys with the United States. The statement from the prosecutor said the suspects attended the hearing in the presence of their lawyers.