The CIA has a recording of a phonecall in which Saudi Crown Prince Mohammed bin Salman gave instructions to “silence Jamal Khashoggi as soon as possible”, a Turkish news website has reported.

Gina Haspel, CIA director, is said to have revealed the existence of a wiretapped call between Prince Mohammed and his brother Khaled bin Salman, who is Saudi’s ambassador to the US, to Turkish officials during a visit to Ankara last month, according to Hurriyet.

“It is said that the crown prince gave an instruction to silence Jamal Khashoggi as soon as possible and this instruction was captured during the CIA wiretapping,” Hurriyet columnist Abdulkadir Selvi wrote on Thursday. “The subsequent murder is the ultimate confirmation of this instruction.”

The brothers are reportedly heard talking about the “discomfort” caused by the Washington Post columnist’s criticism of the kingdom’s administration.

A Turkish official contacted by Reuters said he had no information about such a recording.

Khashoggi, a prominent critic of Prince Mohammed, was killed on Oct. 2 inside the Saudi Consulate in Istanbul.

Hatice Cengiz, Khashoggi's fiancee, talks to Haberturk TV about the day he went missing
Hatice Cengiz, Khashoggi’s fiancee, talks to Haberturk TV about the day he went missing Credit: AP

If confirmed, the wiretap could call into question Washington’s official claim that they have found no evidence to support accusations the murder was ordered by the prince, Riyadh’s de-facto leader, himself.

The leak comes days after President Donald Trump signalled his support for Prince Mohammed, in a statement which declared he would not further punish Saudi for the murder.

In an extraordinary statement subtitled “America First!” Mr Trump said on Tuesday that “our intelligence agencies continue to assess all information, but it could very well be that the Crown Prince had knowledge of this tragic event — maybe he did and maybe he didn’t!”

He has since faced calls from members of his own party to re-evaluate ties with the ultraconservative kingdom, but Mr Trump has said the benefits of a good relationship outweigh the possibility its own prince ordered the killing.

President Donald Trump speaks to the media about Khashoggi's murder
President Donald Trump speaks to the media about Khashoggi’s murder Credit: Getty

The Turkish media has published a drip-drip of leaks of information since the news of the Khashoggi’s death in early October, designed to put pressure on both Riyadh and the US to respond.

Riyadh initially remained silent about the 59-year-old columnist’s disappearance, before claiming that he left the consulate after a short meeting with officials.

They then changed their story several times, later claiming that Khashoggi was killed by mistake in a “fistfight” gone wrong. They admitted earlier this month that he was killed and dismembered after attempts to persuade him to come home failed.

Saudi today warned criticism of the prince was a “red line”.

Foreign Minister Adel al-Jubeir told the BBC that calls for MBS, as he is nicknamed, to be held accountable for the killing, “would not be tolerated”, nor would discussion of “anything disparaging”.

Federica Mogherini, the EU’s top diplomat, said on Thursday all those “really responsible” for the murder of journalist Khashoggi have to be held accountable.

“Those responsible, really responsible for this terrible murder have to be accountable,” she told a news conference in Ankara.