Turkey says the Washington Post columnist, who was critical of the Saudi crown prince, was strangled and dismembered at the Saudi Consulate in Istanbul on October 2 by a 15-member assassination squad.
"We gave the recordings, we gave them to Saudi Arabia, we gave them to Washington, to the Germans, to the French, to the English. They know", Erdogan said. "Saudi Arabia's government can disclose this by making these 15 people talk", Erdogan said.
So far, 18 people, including security officers, have been arrested in Saudi Arabia in connection with the murder.
Qahtani, who built up a formidable cyber army that identified dissident voices across the world and acted ruthlessly to snuff out all anti-establishment voices, became the fall guy after Turkey asserted that the Khashoggi killing was ordered by the highest echelons of the Saudi order.
Erdoğan also criticized the stance of Saudi authorities. "Here [Turkey] is the place where the incident took place, you can discuss whatever you want to discuss here".
The bill would come as a huge blow for Saudi who just last Monday launched a project to build the country's first nuclear research reactor.
It was also revealed Friday that the USA was planning to end aerial refueling of Saudi aircraft conducting airstrikes against Yemen, two USA officials told CNN.
Khashoggi disappeared after he entered the consulate on October 2 even as his fiancée Hatice Cengiz waited outside the building. After initially denying and later playing down the incident as a fistfight, Saudi Arabia accepted that the journalist's killing was premeditated. President Donald Trump has reiterated he does not want to jeopardise money coming into the U.S. from Saudi Arabia.