Saudi officials have for weeks pushed a theory, via anonymous leaks to the media, that Khashoggi's killers rolled the Saudi journalist's body in some kind of carpet or fabric and gave it to a Turkish coconspirator for removal from the Saudi Consulate in Istanbul.
Saudi Arabia has faced a torrent of worldwide condemnation over the killing of the royal insider-turned-critic.
"The reason they dismembered Khashoggi's body was to dissolve his remains more easily", Mr Aktay - advisor to Turkey's president - said in an interview with the Hurriyet Daily newspaper.
"Now we see that they did not only dismember his body but also vaporised it".
A group of US evangelicals, including former Rep. Michele Bachmann (R-MN), held a rare meeting Thursday with Saudi Arabia's crown prince Mohammed bin Salman at his palace.
The newspaper quoted "people familiar with the calls" as saying that Netanyahu and Egyptian President Abdel Fatah al-Sissi defended bin Salman, saying his effective leadership of Saudi Arabia had important strategic implications.
Saudi Arabia has denies the comments were made or that its royal family was involved in the killing, and says it is "determined to find out all the facts".
Istanbul's prosecutor confirmed on Wednesday that the writer had been strangled.
Moreland drills three-run homer in Game 4
He may have to do it one more time though as he is now in line to start Game 7 at Fenway Park, if the series makes it that far. Game 4 took only 3 hours, 57 minutes, but had at least as many dramatic twists. "We're in a good mental space right now".
The cutting of aid by Gates Foundation came amidst reports that Crown Prince Salman had disparaged Khashoggi as a member of the Muslim Brotherhood, in talks with United States officials, after the journalist's murder.
The phone call is reported to have taken place on 9 October, a week after Khashoggi disappeared.
Khashoggi's fiancee Hatice Cengiz, who waited outside the consulate as the journalist entered to obtain documents for their upcoming marriage, said what was done to his body was "brutal, barbaric and ruthless".
The kingdom, however, later admitted that Khashoggi had been murdered in the consulate during an interrogation by rogue operatives that had gone wrong after diplomatic pressure grew tremendously on Riyadh to give an account on the mysterious fate of its national. "To claim otherwise would be ridiculous".
Riyadh initially denied it had anything to do with the critic's disappearance and then changed its story several times, first claiming Khashoggi died in a fist fight before admitting Turkish evidence suggested his killing was premeditated.
Speaking at a journalism awards ceremony Thursday, Fred Ryan, Publisher and CEO of the Washington Post which Khashoggi wrote for, urged the Trump administration to take a tougher line.
Saudi Arabia's consulate is pictured from a skyscraper in Istanbul's Levent district, Turkey.
Recent reports also speculate the journalist may have been assassinated for preparing a report about the planned use of chemical weapons by the Saudi-led coalition fighting in Yemen.
"If the democracies of the world do not take genuine steps to bring to justice the perpetrators of this brazen, callous act - one that has caused universal outrage among their citizens - what moral authority are they left with?, " she asked.