, has reportedly listened to the audio recording of his torture and killing, according to pro-government media in Turkey and The Washington Post. Representatives for the CIA and Turkish intelligence declined to comment.
Saudi Arabia's Crown Prince Mohammed bin Salman has denied responsibility for Khashoggi's death, referring to the incident as a "heinous crime that can not be justified".
Turkish authorities, including the president, said this week that Saudi agents had scouted Istanbul's Belgrad Forest before Khashoggi's death inside Saudi Arabia's Istanbul consulate on October 2. Speaking at an investment forum he was hosting in Riyadh, the crown prince called the killing a "heinous crime" but offered no new information on what happened.
It later dropped that account for a new one, saying it had detained 18 people for what it said was an accidental killing during a "fistfight".
"Even Saudi Arabia itself has admitted that the crime was premeditated and involved state officials", Agnes Callamard, United Nations Special Rapporteur on Extrajudicial, Summary or Arbitrary Executions, said during a press conference.
Turkish President Recep Tayyip Erdogan described the death Tuesday as a "ferocious" premeditated murder.
Khashoggi, a known critic of the Saudi crown prince, was a known critic of the crown prince, disappeared after entering the Saudi consulate earlier this month.
Turkey has long dismissed the Saudi assertion of an accidental death and has pressed the kingdom to concede that Khashoggi was deliberately targeted for death. The two countries, while both allies of the US, have taken opposing positions on crucial Middle East flash points.
As the shocking revelations mount, Turkey is pushing Saudi Arabia for more detail.
'We are determined not to allow the murder to be covered up and for those responsible - from the person who gave the order to those who executed it - not to escape justice, ' he said in the capital, Ankara.
Saudi Energy Minister Khalid Al Falih conceded on Wednesday that the scandal over Khashoggi had hurt the kingdom's image.
In the absence of high-profile figures, $50bn of deals were signed, although most were with companies from Saudi Arabia's regional allies, as well as the French oil firm Total, one of the few western companies that refused to withdraw.