WASHINGTON — The chiefs of U.S. intelligence agencies last week presented President Barack Obama and President-elect Donald Trump with a summary of unsubstantiated reports that Russia had collected compromising and salacious personal information about Trump, two officials with knowledge of the briefing said.
The summary is based on memos generated by political operatives seeking to derail Trump's candidacy. Details of the reports began circulating in the fall and were widely known among journalists and politicians in Washington.
The two-page summary, first reported by CNN, was presented as an appendix to the intelligence agencies' report on Russian hacking efforts during the election, the officials said. The material was not corroborated, and The New York Times has not been able to confirm the claims.
But intelligence agencies considered it so potentially explosive that they decided Obama, Trump and congressional leaders needed to be told about it and informed that the agencies were actively investigating it.
Intelligence officials were concerned that the information would leak before they informed Trump of its existence, said the officials, who spoke on the condition of anonymity because the summary is classified and talking about it would be a felony.
On Tuesday night, Trump responded on Twitter: "FAKE NEWS - A TOTAL POLITICAL WITCH HUNT!"
In an appearance recorded for NBC's "Late Night With Seth Meyers," Trump's spokeswoman, Kellyanne Conway, said of the claims in the opposition research memos, "He has said he is not aware of that."
Since the intelligence agencies' report Friday that President Vladimir Putin of Russia had ordered the hacking and leaks of Democratic emails in order to hurt his Democratic opponent, Hillary Clinton, and help Trump, the president-elect and his aides have said that Democrats are trying to mar his election victory.