While Saudi Arabia's description of what happened to the elder Khashoggi has shifted several times, Turkish officials have said he was strangled shortly after he entered the Istanbul consulate and his body was dismembered.
The official said Turkey believes that two members of the team "came to Turkey for the sole objective of covering up evidence" - a task they completed before police were allowed to search the Saudi consulate where Mr Khashoggi was killed on 2 October.
The report said they visited the consulate every day from their arrival on October 11 until October 17. After weeks of speculation that he could have been assassinated inside the building and searches of the consular premises by Turkish police, the Saudi prosecutor-general confirmed his death.
Ankara had demanded Riyadh to cooperate in finding Khashoggi's body, which Istanbul's chief prosecutor said had been dismembered.
Saudi Arabia has told a United Nations human rights review that it's investigating the killing of a Saudi journalist at its Istanbul consulate, adding it will prosecute those responsible.
Analysts say Saudi authorities appear to be trying to defuse the crisis by shoring up support from within the royal family.
Many US lawmakers have called for US weapons sales to be cut off in response to Mr Khashoggi's murder inside the Saudi consulate in Istanbul, a step Mr Trump has rejected.
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I asked him who he was working for, and he told me his boss was some sort of politics guy in Washington named Jack Burkman . The special counsel's office did not go into detail about the allegations or who is behind them.
Talking to Turkey's Anadolu Agency, Oktay said that Turkey carried out an investigation into Khashoggi's killing with 'transparency and a serious manner'.
Saudi Arabia now draws on its abundant oil and natural-gas resources to meet its fast-growing demand for power and to desalinate its water.
At Fortune's Most Powerful Women International Summit in Montreal, Canada on Monday, Lockheed CEO Marillyn Hewson fielded questions about how she was weighing Lockheed's weapons sales to Saudi Arabia in the wake of Khashoggi's death.
Saudi Arabian billionaire Prince Alwaleed bin Talal, an worldwide businessman, said on Sunday that the probe will exonerate the country's leader.
Initially they said he had left the consulate alive, then that he had died in a fist-fight, before officials began to describe his death as "murder" and pre-meditated as a result of a "rogue operation".
We made it very public.
The Turkish president, Recep Tayyip Erdoğan, and officials from his ruling AK party have reiterated their belief in recent days that the "highest levels" of the Saudi establishment must have ordered the journalist's killing, as well as allegations that Saudi Arabia is incapable of carrying out an independent and unbiased criminal investigation. "This will happen. Otherwise Saudi wouldn't have started an internal investigation", Salah said.