Turkish officials said he was brutally killed and his body dismembered by a team of operatives sent from Saudi Arabia. In phone calls with Mr. Trump, Mr. Pompeo and other top American officials, Prince Mohammed and other Saudi leaders have denied any involvement.

Mr. Pompeo said on Thursday that the United States would give the Saudis a few more days to conduct their investigation. He told reporters at the White House that the Saudi report would be “transparent for everyone to see, to ask questions about and to acquire.”

Mr. Trump said in the interview it was still “a little bit early” in the process to draw definitive conclusions about who ordered the killing. But he expressed no doubt that the truth would come out soon. “We’re working with the intelligence from numerous countries,” he said.

“This is the best intelligence we could have,” Mr. Trump added.

Intelligence reports have drawn direct links between the Saudi operatives who traveled to Istanbul and the Saudi royal court. Four of the operatives, whose images were caught on surveillance video, served as guards for Prince Mohammed in April during his visit to the United States.

American intelligences agencies, however, are divided on the degree of responsibility that can be pinned on the prince — which is complicating an appraisal that they are compiling to present to the White House, according to a former senior administration official.

The Central Intelligence Agency, whose analysts draw on an array of hard facts and subjective judgments, are increasingly convinced that Prince Mohammed is culpable in Mr. Khashoggi’s death.

But other agencies have stopped short of that conclusion. The National Security Agency, for example, collected communications intercepts of Saudi officials discussing a plan to lure Mr. Khashoggi back to Saudi Arabia from his home in Virginia and then detain him, according to a former senior American official. But the intercepts do not reveal whether Prince Mohammed directly ordered the killing of Mr. Khashoggi.