It is also pressing Saudi Arabia for information concerning the whereabouts of Khashoggi's remains, which still haven't been found.
Pompeo has also announced that the United States is revoking visas of 21 Saudi officials who were suspected of involvement in the case, in the first concrete step of punishment taken by the Trump administration after the disclosure of Khashoggi's death.
Germany has suspended export licenses to the kingdom, while U.S. President Donald Trump has been backed into a corner over his support for a country that is key to U.S. strategies in the Middle East.
The Turkish official added that later his body was dismembered in the consulate.
Okaz has learnt from Turkish sources that the Saudi and Turkish sides have agreed to continue cooperation in the investigations.
"The killing, the murder of Jamal Khashoggi in the consulate in Turkey violates the norms of global law". A critic of the Saudi royal family, Mr Khashoggi had been living in exile in the United States.
Family mourns loss of three siblings killed at bus stop
She remained at the scene of the accident, but police said Shepherd was arrested at her workplace later Tuesday. Three children were killed in a crash while waiting for a school bus in Fulton County, Indiana Tuesday morning.
Saudi Arabia has so far denied the extradition of 18 suspects detained in Riyadh, but officials insist the kingdom will bring them to justice once the investigation is complete.
"As Saudi public prosecutor, you have to ask that question, so you can reveal it", Erdoğan told reporters in Ankara, shortly after the head of the Saudi investigation, Attorney General Sheikh Saud al-Mojeb, entered the diplomatic compound.
Saudi hit squadCleaning personnel wait to enter Saudi Arabia's Consulate in Istanbul, Monday, Oct. 15, 2018.
Khashoggi went missing on October 2, after stepping into Saudi Arabia's consulate in Istanbul, Turkey to collect documents that would allow him to get married to Hatice Cengiz, who was waiting outside the consulate for Khashoggi.
After initially insisting that Khashoggi left the consulate unharmed, then saying he died in a brawl during an interview, the Saudi government ultimately admitted he was killed by a "rogue operation", and arrested 18 people.
Since the Washington Post columnist vanished earlier this month, Turkish officials have strategically leaked key developments in the case to control the narrative.