Nearly simultaneously, the king issued royal orders removing Saud al-Qahtani - a close aide to the crown prince - from his position. The statement said royal court adviser Saud al-Qahtani and deputy intelligence chief Ahmed Assiri have been fired from their positions.
On October 18, US President Donald Trump said that "it certainly looks" that the Saudi journalist was dead.
But Trump again emphasised Riyadh's role in countering regional rival Iran and the importance that lucrative US arms sales to Saudi Arabia have for American jobs.Khashoggi, a USA resident, went missing after entering the consulate on October 2 to obtain documents for his upcoming marriage.
Saudi Arabia initially denied any knowledge of the disappearance of Khashoggi, who disappeared after entering its consulate.
In firing officials close to Prince Mohammed, Saudi Arabia stopped short of implicating the heir-apparent of the world's largest oil exporter.
The announcement marks the first time that Saudi officials have acknowledged that Jamal Kashoggi was killed inside the consulate in Turkey.
Britain's Foreign Office, which also has close ties to Riyadh, said it "was a awful act and those responsible must be held to account".
He said he would speak with the crown prince.
The announcement could ease strains with the US and Turkey but leaves lingering questions about the extent of Prince Mohammed's role in and knowledge of the incident.
But amid growing pressure at home and overseas over his soft posture toward Saudi Arabia, Treasury Secretary Steve Mnuchin withdrew from a high-profile investment summit scheduled to begin in Riyadh later this month, and Trump on Thursday seemed to warn that there would be "severe" consequences for Riyadh if it was found responsible for Khashoggi's death.
Saudi Arabia's "latest version asks us to believe that Mr Khashoggi died after becoming engaged in a "brawl" with officials who had been sent to meet him".
"Journalism and journalists are so fundamentally important to our democracy", Singh said.
Eighteen men were in custody over the killing, the kingdom said, as it also announced the sacking of two top aides of MBS as well as three other intelligence officials.
"The United States must not be complicit in this cover-up".
After talks in Copenhagen, Danish Prime Minister Lars Lokke Rasmussen said, "We haven't been told the full truth, and we must insist on getting that", Bloomberg reports. Similarly, Finland's Foreign Ministry said in a Twitter statement on Saturday that Khashoggi's death must be made subject to a transparent investigation.
Were his remains to be found, traces of the drug may be found, asking new questions of Saudi Arabia's fist-fight narrative.
"The Global Magnitsky Act doesn't have exceptions for accidents. There's no way that under the current context we should be selling weapons that might be used to further oppress its citizens".