Istanbul (CNN) Turkish authorities believe 15 Saudi men who arrived in Istanbul on October 2 were connected to the disappearance -- and possible murder -- of Saudi journalist Jamal Khashoggi. At least some of them appear to have high-level connections in the Saudi government.

Sabah, a pro-government private newspaper in Turkey, on Tuesday listed 15 names alongside photographs of men who authorities believe were flown into Istanbul from Riyadh. The state-run Anadolu news agency later published similar details on eight of the individuals.

Turkish officials contend that their mission was the premeditated killing of Khashoggi and that Khashoggi was killed inside the consulate. One source told the New York Times that he was dismembered with a bone saw.

Two sources familiar with the investigation confirmed to CNN that the 15 men listed by the two publications were of interest in the ongoing criminal investigation launched by Turkish prosecutors.

At least some of the men flew in on two private jets from Riyadh on the same day that Khashoggi, a former Saudi royal court insider turned critic, entered the Saudi consulate in Istanbul. He has not been seen in public since.

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