Two U.S. officials with direct knowledge told NBC News on Tuesday that briefing materials prepared for President-elect Trump included information that initially circulated among Trump opponents and was passed to U.S. intelligence agencies making damaging allegations about his dealings with Russians.
Neither of the officials said that the FBI was actively investigating the information, which has not been verified by U.S. agencies.
The sources would not comment on the nature of the allegations. The Trump transition team did not immediately respond to a request for comment.
But Trump himself did tweet at 8:19 p.m. ET Tuesday, in call caps, "FAKE NEWS — A TOTAL POLITICAL WITCH HUNT!"
It wasn't completely clear exactly what he was referring to, but other news outlets had already reported on the briefing materials, with more detail than could be confirmed by NBC News.