Secretary of State Mike Pompeo then had a follow-up call with the crown prince to reiterate the US request for information and a thorough, transparent investigation.
"I don't like stopping massive amounts of money that's been pouring into our country".
"And we're being very tough and we have investigators over there and we're working with Turkey, and frankly we're working with Saudi Arabia", he continued. He warned that the Saudis could instead buy from Russian Federation or China.
Trump also said that the White House would be meeting with Khashoggi's fiancee, though at the time, he referred to her as Khashoggi's "wife".
Khashoggi went to the consulate to take care of some paperwork for his upcoming marriage to a Turkish national. A senior Turkish official told the Times that "Ankara hoped that Washington and the worldwide community would take the lead in challenging Saudi Arabia". TV channels broadcast videos of what they said were the men arriving at the airport and checking into hotels, as well as footage of vehicle traffic outside the consulate before and after Khashoggi's disappearance, including a black van with blacked out windows that the police find suspicious.
Turkish Foreign Minister Mevlut Cavusoglu, speaking Thursday to reporters during a visit to Baghdad, said Turkey would share whatever information comes out of its investigation and called for Saudi cooperation in the probe. He did not elaborate.
A former United States intelligence official said the details in the intercepts do not indicate any intention to harm Khashoggi.
Khashoggi's fiancee, Hatice Cengiz, said she waited for him and he never came back out on October 2.
He further stressed that he wants to end arms exports if there's "any indication" the Saudis are "implicated in killing this journalist that was critical of them". They did not disclose how they were obtained.
Mr Erdogan has previously challenged Saudi Arabia to provide proof of its version of events - that Mr Khashoggi, a prominent critic of the Saudi monarchy, had left the consulate "after a few minutes or one hour". Bob Corker (R-Tenn.), Bob Menendez (D-N.J.), Lindsey Graham (R-S.C.), and Patrick Leahy (D-Vt.) sent a letter to Trump demanding that the US impose sanctions under the Global Magnitsky Human Rights Accountability Act on any "foreign person responsible for such a violation related to Mr. Khashoggi".
Several other USA lawmakers have also raised concerns, saying the U.S. should reevaluate its ties to Saudi Arabia in light of the journalist's case. The Trump administration's Middle East policy, ranging from issues of Iran, Syria and Israel, has been built around the Saudi alliance despite criticism of the kingdom's abysmal human rights record and the war in Yemen.
Those associations could become a political liability if Prince Mohammed is implicated in Khashoggi's disappearance.
Separately, the U.S. State Department spokeswoman said the Saudi ambassador to Washington was on his way back to the kingdom and the United States had told him, "We expect information upon his return".
Khaled Saffuri said the adviser, Saud al-Qahtani, told Khashoggi "that the crown prince wants him back and said you are our son, you are loyal, the crown prince would like you to come and be his adviser, stuff like that". "I don't trust him for a minute'".
A bipartisan group of USA senators is forcing the Trump administration to investigate the disappearance of a Saudi journalist, triggering a human rights probe that could result in sanctions against Saudi officials and entities.