Mr Khashoggi, a 59-year-old columnist for The Washington Post, vanished after entering the consulate in Istanbul to pick up paperwork for his upcoming marriage to his fiancee, who was waiting for him outside.
Turkey cast doubt Wednesday on whether Saudi Arabia was willing to "genuinely cooperate" in the investigation into the murder of journalist Jamal Khashoggi, as worldwide pressure increased on Riyadh to provide answers.
According to prosecutor, Irfan Fidan, Khashoggi's body was then dismembered and disposed of.
Saudi Arabia's Public Prosecutor Sheikh Saud Al-Muajab was returning to the Kingdom after completing his 72-hour visit to Turkey as part of the ongoing investigation into the death of Saudi journalist Jamal Khashoggi.
The prosecutor's office reiterated Turkey's request for extradition of suspects arrested by Saudi Arabia in Khashoggi case given that the crime scene was in Turkey and Turkish officials are authorized to conduct the investigation.
Pentagon chief Jim Mattis said the U.S. had been watching the conflict, in which almost 10,000 people have been killed, "for long enough". He should not pave the way for a cover-up of my fiance's murder.
The killing of Khashoggi, a former Saudi court insider, has also focused global attention on the policies of Saudi Crown Prince Mohammed Bin Salman.
They say Ahmad is likely to lead an effort to curtail the power of Crown Prince Mohammed bin Salman, widely referred to as MBS, and argue for the appointment of a senior royal to act as a "guardian" for the crown prince.
A group of Republican senators urged President Donald Trump on Wednesday to suspend negotiations with Saudi Arabia on a potentially lucrative atomic energy agreement following the murder of journalist Jamal Khashoggi. "As Saudi public prosecutor, you have to ask that question, so you can reveal it", the Turkish president told reporters in Ankara.
Turkey, through a gradual release of information and public statements, has helped feed an worldwide outcry over the case and pressured Saudi Arabia to concede its role.
Trump has hedged his criticism of Saudi leaders over Khashoggi, insisting he does not want to imperil a "tremendous order" of $110 billion of weapons he says will support 500,000 United States jobs - figures that experts say are highly exaggerated. The Saudis initially claimed that Khashoggi had exited the consulate alive, and expressed apparent concern over his whereabouts.
Gruesome reports in the Turkish media had previously alleged that Khashoggi had been killed and cut into pieces by a team sent from Riyadh to silence him. We want to keep our journalism open and accessible and be able to keep providing you with news and analyses from the frontlines of Israel, the Middle East and the Jewish World.
Turkey's foreign minister, Mevlut Cavusoglu, on Monday welcomed the cooperation between Turkish and Saudi investigators and said he hoped there would be no further delays.