U.S. spy agencies increasingly convinced of Saudi prince’s ties to Khashoggi disappearance

But intelligence agencies have growing circumstantial evidence of the prince’s involvement — including the presence of members of his security detail and intercepts of Saudi officials discussing a possible plan to detain Mr. Khashoggi, according to American officials.

Officials have also said the prince’s complete control over the security services makes it highly unlikely that an operation would have been undertaken without his knowledge.

American intelligence agencies are preparing the assessment of Prince Mohammed to present to President Trump. The work was described by a half-dozen officials on Wednesday, as Secretary of State Mike Pompeo concluded a trip to the kingdom that failed to deliver an immediate diplomatic resolution to the crisis.