In an interview with Turkish broadcaster Haberturk that aired Friday, Cengiz said Khashoggi was treated well during an earlier trip to the consulate on September 28.
Turkish President Tayyip Erdogan has called Khashoggi's murder a "savage killing" and demanded Riyadh punish those responsible, no matter how highly placed.
Turkey has requested the extradition of 18 Saudi nationals arrested by Saudi authorities in the killing, including members of the 15-man "hit squad" allegedly sent from Saudi Arabia to kill the journalist and three consulate employees. Turkish sources say authorities have an audio recording purportedly documenting the murder.
Riyadh later updated its version of events to say that evidence from Turkish investigators indicated that the killing had been premeditated, but maintained that his body had been wrapped in a rug and disposed of by an unnamed "local collaborator".
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"On the issue of extradition, the individuals are Saudi nationals".
He did not mention de facto Saudi ruler Crown Prince Mohammed bin Salman by name at any point.
Trump, in his most recent comments, called it "one of the worst in the history of cover-ups".
"The statements he made about the subject were totally opposite within a very short period of time, and I totally took what he said [about a visit] as something he said to garner support from the public and considered it as such", she said Friday.
Erdogan said he had spoken with Prince Mohammed.
Khashoggi was least seen entering the Saudi consulate in Istanbul on October 2 to complete paperwork for his wedding to his Turkish fiancee, Hatice Cengiz.
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He said he believed Bowers was acting alone, adding: "We have no knowledge that he was known to law enforcement before today". Hissrich called it "a very horrific crime scene" and said it is one of the worst he has seen, including some plane crashes.
As worldwide pressure has grown, President Trump has promised "severe punishment" if the Saudi government - a close ally of the US - was found to be linked to the killing.
US Secretary of State Mike Pompeo this week announced moves against 21 Saudis to either revoke their visas or make them ineligible for US visas after the Khashoggi killing.
"Information from the Turkish side affirms that the suspects in Khashoggi's case premeditated their crime", said the statement carried by state TV.
Addressing the mounting skepticism around the kingdom's involvement in the killing, Jubeir said that the global outcry and media focus on the killing of Khashoggi earlier this month has become "hysterical" as he urged the public to wait for the results of an investigation before ascribing blame to the kingdom's top leadership.
Turkish officials and some USA lawmakers allege the crown prince ordered the operation in which Jamal Khashoggi killed.
Speaking at a meeting of the ruling Justice and Development Party, Erdogan said the Saudi prosecutor will meet his Turkish counterpart during the visit.
Plane carrying 188 passengers crashes into sea
According to Indonesian media, TribunNews , the aircraft's final contact was at 06.33 WIB with Jakarta Air Traffic Control. Budi suspected the downed Lion Air JT 610 was now submerged 30-35 meters under the Tanjung Karawang waters.