The crown prince also condoled with Salah Jamal Khashoggi by phone, the SPA said.
Surveillance footage allegedly provided by Turkish authorities to CNN purports to show Khashoggi's lookalike, named as Mustaka al-Madani, leaving the Saudi Consulate in Istanbul via the rear entrance, wearing the journalist's own clothes that he wore on October 2.
Turkish officials say the Turkish president and his American counterpart have spoken over the phone and discussed the killing of Saudi journalist Jamal Khashoggi.
On the day Khashoggi disappeared, Cengiz waited for hours outside the consulate for him and, when he did not return, got in touch with authorities as he had instructed her to do, she later said.
The saga has caused uproar, with Germany, Britain and France calling for Saudi Arabia to provide facts, and Chancellor Angela Merkel saying Germany would not export arms to the kingdom while uncertainty over Khashoggi's fate persisted.
The same man was seen in Khashoggi's clothing, according to the Turkish case, at the city's world-famous Blue Mosque just hours after the journalist was last seen alive entering the consulate on October 2.
A Saudi friend of Khashoggi told The Associated Press that Khashoggi's son, Salah, has been under a travel ban since past year as a result of his father's criticism of the kingdom.
"The individuals who did this did this outside the scope of their authority", he said.
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Turkish officials suspect Mr Khashoggi was killed inside the consulate by the team of Saudi agents and his body cut up.
For now at least, Spain is not freezing its arms sales to Saudi Arabia.
The driver said they did not sense an extraordinary situation on the day when Khashoggi entered the consulate and he had not been sent anywhere outside of the consulate.
"Obviously there's been deception and there's been lies", he said of the shifting accounts of Khashoggi's death offered by Riyadh.
"The world is watching", Kushner said was his advice to Prince Mohammed.
The kingdom has fired five top officials and arrested 18 others in an investigation into the killing - a move that has widely been viewed as an attempt to cover up the Crown Prince's role in the murder.
After weeks of denying knowledge of Khashoggi's whereabouts, Riyadh admitted that he had been killed in the consulate. We don't know in terms of details how.
Mr Trump described the king's denial as "very, very strong".
"I am not satisfied until we find the answer". Against these must be weighed the crown prince's right-minded hostility to Iranian imperialism; his openness to an alliance with Israel; his realization that Saudi society's oppression of women is crippling it; and his oft-stated intention to end Saudi subsidization of Wahhabi radicalism around the globe.
"A lot of the reforms they've been making there to help us track down the terror financing and also to push back against the people who are perverting the religion, have been very historic over the past year", he said.