"If he left, you have to prove it with footage".
The programme has released audio of the conversation, saying that although it would not normally do so, it had decided to make an exception "in light of the circumstances".
Private broadcaster NTV reported on October 9 that all suspects were seen entering the consulate half an hour before Khashoggi and leaving it after nearly three hours.
Two months later, writing about the detentions of scores of Saudi royals, senior officials and businessmen accused of corruption, he said Crown Prince Mohammed bin Salman dispensed "selective justice" and said there was "complete intolerance for even mild criticism" of the crown prince.
Mr Erdogan, who said he was personally following the case, added that Turkey had no documents or evidence at hand regarding the case.
When was he last seen?
She said Mr Khashoggi had been required to surrender his mobile phone, which is standard practice in some diplomatic missions.
"Based on their initial findings, the police believe that the journalist was killed by a team especially sent to Istanbul and who left the same day", the government source told AFP on Saturday. The Turkish private NTV television said Ankara asked for permission for its investigators to search the consulate building, but a Foreign Ministry official would not confirm the report.
Saudi Arabia has agreed to let Turkish authorities search the kingdom's Istanbul consulate after prominent journalist and Riyadh critic Jamal Khashoggi went missing last week, the Turkish foreign ministry said Tuesday.
U.S. Republican Senator Lindsey Graham said he and other lawmakers "agree if there was any truth to the allegations of wrongdoing by the Saudi government, it would be devastating to the U.S. -Saudi relationship and there will be a heavy price to be paid - economically and otherwise".
The alleged murder, cloaked in deep mystery, assumes more global significance because Khashoggi was a high-profile journalist with penetrating worldwide connections.
In a March 6 Guardian editorial co-authored with Robert Lacey, he wrote: "For his domestic reform programme, the crown prince deserves praise".
Over the past year, he has written columns for newspapers including the Washington Post criticizing Saudi policies toward Qatar and Canada, the war in Yemen and a crackdown on dissent which has seen dozens of people detained.
In March, the State Department approved a $670 million arms sale to Saudi Arabia, part of a promised $110 billion in deals touted by Trump after his first presidential trip to the Saudi capital previous year.
"Our security officials are investigating the issue in every detail", Yasin, Aktay, an adviser to Erdogan, told CNN Turk on Sunday.
Saudis are, perhaps, trying to flawless their excellence in furtherance of their plans and the world must expect more covert operations by Saudi Arabia in a not-so-distant future with Iran as its primary target.