After a fortnight of denials, Saudi authorities admitted on Saturday that the Washington Post columnist was killed after entering the consulate on October 2, a disappearance that sparked outrage and plunged the Gulf kingdom into a spiralling international crisis.
Turkish officials have accused Riyadh of carrying out a state-sponsored killing and dismembering the body, with pro-government media in Turkey reporting the existence of video and audio evidence to back those claims.
Police have searched a forest in Istanbul where they believe his body may have been dumped.
After initially saying Khashoggi left the consulate unharmed, and then that they were investigating his disappearance, Saudi authorities backtracked and admitted the 60-year-old was killed in a "brawl" with officials inside the consulate.
But that narrative -- combined with the absence of Khashoggi's body -- quickly drew scepticism and scorn from many, including staunch allies.
Ankara vowed to reveal all the details of its own inquiry as US President Donald Trump said he was unsatisfied with Saudi Arabia's response to the columnist's death while the EU, Germany, France, Britain, Australia, Canada and the UN also demanded greater clarity.
The controversy has put the kingdom -- for decades a key ally in Western efforts to contain Iran -- under unprecedented pressure.
It has also evolved into a major crisis for Crown Prince Mohammed bin Salman, a Trump administration favourite widely known as MBS, whose image as a modernising Arab reformer has been gravely undermined.
"This feels the most seismic moment in Middle East politics since the Arab Spring," tweeted Michael Stephens, a Middle East expert at the London-based Royal United Services Institute.
"If only Jamal knew what impact he would have on a region he cared so deeply about."
'Changing stories'
Britain was among the latest countries to question Riyadh's version of events.
"I don't think it's credible," Brexit Secretary Dominic Raab told the BBC on Sunday, adding there was a "serious question mark over the account that has been given".
"We support the Turkish investigation into it and the British government wants to see people held to account for that death."
Ankara has said it has a "debt of honour" to reveal what happened.
"We are not accusing anyone in advance but we don't accept anything to remain covered (up)," said ruling Justice and Development Party spokesman Omer Celik.
French Foreign Minister Jean-Yves Le Drian said many questions remained unanswered while German Chancellor Angela Merkel urged transparency, adding that "available reports on what happened in the Istanbul consulate are insufficient."
The EU's top diplomat Federica Mogherini and UN chief Antonio Guterres both called for a proper investigation and for the perpetrators to be held to account.
Senior Republican Senator Marco Rubio was stark in his assessment.
"Saudi Arabia's changing stories on #KhashoggiMurder is getting old. The latest one about a fist fight gone bad is bizarre," he tweeted Saturday, renewing his call for sanctions against those responsible.
Trump initially said he found the Saudi explanation credible, but later expressed more scepticism -- although he warned against scrapping a multibillion-dollar arms deal with the conservative kingdom.
"No, I am not satisfied until we find the answer," he told reporters. "It was a big first step. It was a good first step. But I want to get to the answer."
Saudi Arabia's Gulf ally, the United Arab Emirates, welcomed the Saudi disclosures, as did Egypt, Kuwait and Oman.
The front pages of Saudi newspapers on Sunday were branded with headlines of support for the kingdom's government.
Okaz's front page said "Justice continues... accountability is coming", while Al-Riyadh daily said there was a "wide welcome" of the government's "justice and firmness" in the case of Khashoggi.
Shielding crown prince
In the Saturday admission, Saudi Attorney General Sheikh Saud al-Mojeb also announced a series of moves including against people linked to the crown prince, who Khashoggi had criticised in his writings.
He said 18 Saudis had been arrested and two top aides of Prince Mohammed had been sacked, together with three other intelligence agents.
The Saudi king also ordered the establishment of a ministerial body under the chairmanship of the crown prince -- his son -- to restructure the kingdom's intelligence agency and "define its powers precisely," Saudi state media said.
Saudi officials have roundly denied that the crown prince had any involvement in the affair.
jpegMpeg4-1280x720But one suspect identified by Turkey was said to be a frequent companion of the young heir to the throne, three others were linked to his security detail and a fifth is a high-level forensic specialist, according to The New York Times.
The decision to overhaul the intelligence apparatus and sack members of Crown Prince Mohammed's inner circle is designed to "distance the crown prince from the murder", said analysis firm Eurasia Group.
In a recent off-the-record interview published posthumously by US magazine Newsweek, Khashoggi described the 33-year-old heir apparent as "an old-fashioned tribal leader", but said he would have accepted an offer to work as his adviser.
"I'm not calling for the overthrow of the regime," the one-time royal insider said. "I'm just calling for reform of the regime."
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