Turkey's president has said he will reveal the "naked truth" about the killing of Jamal Khashoggi today, as Saudi Arabia presses ahead with a major conference despite high-profile attendees dropping out.

Recep Tayyip Erdogan will make his address to parliament later this morning - revealing the latest developments in Ankara's investigation into the journalist's death at the Saudi consulate in Istanbul.

Omer Celik, the spokesman for Mr Erdogan's ruling AK Party, has said: "We are facing a situation that has been monstrously planned and later tried to be covered up. It is a complicated murder."

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Despite facing growing pressure from the international community, Riyadh is pressing ahead with its Future Investment Initiative - a summit dubbed "Davos in the Desert".

The UK's International Trade Secretary Liam Fox, US Treasury Secretary Steve Mnuchin and business magnate Richard Branson are among those who have dropped out of the event as pressure on Saudi Arabia has grown.


Others have decided to attend, despite the event being overshadowed by the growing global outrage at the suspected state-sanctioned murder.

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Image: Journalists collecting their press badges at Riyadh's Future Investment Initiative

On Saturday, the Saudis admitted that Mr Khashoggi had died in their consulate in Istanbul but claimed it was in a fist fight.

On Monday, CNN reported that one of the "hit squad" apparently changed into the journalist's clothes as part of a decoy attempt.

Mr Khashoggi was a known critic of the Saudi government and the country's crown prince, Mohammed bin Salman.

Photos have emerged of Mr Mnuchin meeting with Mohammed bin Salman in Riyadh - with the crown prince facing scrutiny amid concerns that members of his personal guard may have been involved in Mr Khashoggi's death.

US treasury spokesman Tony Sayegh has said the investigation into the journalist's death was raised during their talks - but Mr Mnuchin is not planning to attend the investment summit.

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Image: Steve Mnuchin met Crown Prince Mohammed bin Salman. Pic: Saudi Foreign Ministry

The crown prince had been hoping that the investment summit would further cement the attempts to rebrand his country and move its economy away from a long-standing reliance on oil.

Dozens of executives from groups like Goldman Sachs, JP Morgan, Uber and the International Monetary Fund have pulled out.

On Monday, it appeared as if the website of the event, called the Future Investment Initiative, had been hacked.

And, after German Chancellor Angela Merkel said Berlin would not be exporting arms to Riyadh "in the current situation", all eyes were on other major exporters of weapons, including the UK, to see if they would take action against the Saudis.

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It has also been revealed that CIA director Gina Haspel is headed for Turkey, although details of her trip have not been released and were not immediately clear.

Reports from Turkish state media say a 15-member Saudi team flew to Istanbul on 2 October, knowing Mr Khashoggi would enter the consulate to get a document he needed to get married.

Once he was inside, the media reports say, members of the Saudi team grabbed him, cut off his fingers, killed him and dismembered the 59-year-old writer.