The Islamist group has branches in countries around the Middle East, and, to the Saudis, being a member made Khashoggi a terrorist. The president, however, "will demand accountability for those who were involved in the commission of this heinous crime", Pompeo stressed Thursday.
The body of Jamal Khashoggi was "dissolved" after he was murdered and dismembered in the Saudi consulate in Istanbul a month ago, a Turkish official said Friday, as the journalist's fiancee criticised the United States (US) reaction as "devoid of moral foundation".
The US will need a "handful more weeks" to decide if Saudi Arabia should be somehow sanctioned for the murder of Jamal Khashoggi, Mike Pompeo has said, noting that Riyadh remains a "great partner" serving US national security.
The murder has placed strain on the decades-old alliance between the USA and Saudi Arabia and tarnished the image of Crown Prince Mohammed bin Salman, the ultra-conservative kingdom's de facto ruler.
"We made a commitment of holding accountable all those responsible for the murder of Jamal Khashoggi", the USA chief diplomat noted in a separate WIBK radio interview.
Instead, it said, the Saudis on Wednesday invited the Turkish prosecutor and his delegation to Saudi Arabia jointly to question the suspects held there about what happened to Khashoggi's body and whether his death was premeditated. Turkish state news agency Anadolu reported that he had boarded a plane back to Saudi Arabia on Wednesday, having met with the Istanbul chief prosecutor twice.
Prince Mohammed also reportedly urged the White House to preserve the US-Saudi alliance.
Bin Salman, who in recent years has loosened strict social rules and arrested Saudi clerics deemed "extremists", said in April that Israelis are entitled to live peacefully on their own land. The Turks added that the Saudi prosecutor also said no statement had been made by Saudi authorities about the existence of the purported local cooperator.
US State Department spokesman Robert Palladino on Thursday called for Khashoggi's remains to be located and returned to his family for burial as soon as possible.
The "current situation" played a part in the Gates Foundation's decision, a spokesperson told The Wall Street Journal, referring to the killing of Saudi journalist Jamal Khashoggi.
Turkey complies with any "foreign interventions" on its major issues, the main opposition party leader said, suggesting that Ankara allowed the murderers of the Saudi journalist to leave Turkey after a phone call between Saudi King Salman and Turkish President Recep Tayyip Erdoğan.