The image released on Tuesday bore a date and date stamp. A USA official said that Turkish investigators believe Khashoggi was probably dismembered and his body removed in boxes and flown out of the country.
Yemeni Nobel Prize victor Tawakkol Karman, centre, participates at a demonstration for Khashoggi that was organized by the Turkish-Arabic Media Association in front of the Saudi Arabian Consulate in Istanbul on Friday. "The consulate officials can not save themselves by simply saying "he has left", Erdogan told a news conference in Budapest, where he is on an official visit.
A Sunni power, Saudi Arabia is also annoyed by Ankara's rapprochement with the kingdom's Shiite archrival, Iran.
His disappearance has sparked global concerns, particularly after Turkish sources said over the weekend that authorities believed he had been killed inside the consulate. Airport entrances and exits are being investigated.
Saudi Arabia is a longtime ally of the United States, but on Monday senior US officials expressed alarm over Khashoggi's disappearance.
Khashoggi, a Washington Post contributor who had been published in the Arab and Western media, vanished last Tuesday after visiting the consulate to obtain official documents. He served as an adviser to senior Saudi officials.
'If the worst-case scenario is realized, Saudi Arabia will have links to the murder of a vocal critic in a fashion engineered to create just enough doubt for the veneer of implausible-but-sufficient deniability, ' the New York-based Soufan Center said Tuesday.
Even President Donald Trump, who took his first overseas trip as USA president to the kingdom and whose son-in-law Jared Kushner has close ties to Prince Mohammed, said he had concerns.
Prince Khalid bin Salman, the Saudi ambassador to the USA, sought to convey sympathy with carefully moderate criticism in a note to friends in English the embassy shared with reporters. Hopefully, that (it) will sort itself out.
Aksoy added the search will take place as part of the official investigation, which was being conducted "in an intense manner", though he did not say when.
She said Mr Khashoggi had been required to surrender his mobile phone, which is standard practice in some diplomatic missions.
Khashoggi is a critic of the Saudi regime.
Saudi Consul-General Mohammad al-Otaibi told Reuters on Saturday that the consulate's own security cameras showed only a live stream and did not record footage, so they could not provide evidence of Khashoggi's movements.
Turkey and Saudi Arabia relations are already at a deep low.
The case has sparked an worldwide human rights outcry and calls for both sides to prove their statements.
The Turkish private NTV television said Ankara requested permission for Turkish investigators to search the consulate building in Istanbul, but a Foreign Ministry official would not confirm the report.
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