Donald Trump arranged for a group of prostitutes to urinate on the Moscow hotel bed where the Obamas had slept, according to sensational reports in the US.
The President-elect engaged in 'perverted conduct' because he 'hates' Barack and Michelle Obama, it is claimed.
The lurid detail is contained in a dossier allegedly written by a retired British MI6 spy for Trump's political opponents.
None of the claims have been independently verified
The explosive allegations were unearthed when Trump was told Russian spies may have compromising personal and financial information about him during a meeting with intelligence chiefs.
The Italian-designed Ritz-Carlton Moscow measures 2,590 square feet and features floor to ceiling windows facing the Kremlin, Red Square and St Basil's Cathedral.
Obama and his family stayed there when they travelled to Moscow in July 2009 and Trump travelled to Russia in 2013 where he hosted the Miss Universe pageant.
Reports claim Russian spooks had bugged the rooms with hidden microphones and concealed cameras to record everything that went on.
The hotel underwent a luxury refurbishment in 2015.
In the bedroom there are modern comfortable armchairs and a chaise longue covered with soft sheepskin.
Guests of the Presidential Suite can enjoy a 42-inch flat screen TV, top-of-the-range stereo systems, a marble bath tub, a sauna and thick luxurious bath sheets.
The classified report, published online today by Buzzfeed , states: "Trump's (perverted) conduct in Moscow included hiring the presidential suite of the Ritz Carlton Hotel, where he knew President and Mrs Obama (whom he hated) had stayed on one of their official trips to Russia, and defiling the bed where they had slept by employing a number of prostitutes to perform a [redacted] (urination) show in front of him.
"The hotel was known to be under FSB control with microphones and concealed cameras in all the main rooms to record anything they wanted to."
The accusations were denied by Trump who labelled them "fake news" and a "total political witch hunt."
It is understood the alleged sensitive information came in part from memos gathered by a British intelligence operative who had links with Russian sources.
The FBI is now said to be probing the credibility and accuracy of the allegations.
One high level administration official told CNN: “I have a sense the outgoing administration and intelligence community is setting down the pieces so this must be investigated seriously and run down.
"I think [the] concern was to be sure that whatever information was out there is put into the system so it is evaluated as it should be and acted upon as necessary.”
The classified briefings were presented by four of the senior-most US intelligence chiefs -- Director of National Intelligence James Clapper, FBI Director James Comey, CIA Director John Brennan, and NSA Director Admiral Mike Rogers.
Sources claim intelligence chiefs took the extraordinary step of including the synopsis in the briefing documents to make Trump aware allegations involving him are circulating in Washington.
It is understood they also wanted to demonstrate how Russia had potentially harmful information on both political parties, but only released information damaging to Hillary Clinton and Democrats.
CNN has reviewed a 35-page compilation of the memos, from which the two-page synopsis was drawn, but said it is not reporting their details as it has not independently corroborated the specific allegations.
It is claimed some of the memos were circulating last summer but US intelligence agencies have now checked out the former British intelligence operative and find him and his sources to be credible enough to present the information.
They were prepared by the former MI6 agent, who was posted in Russia in the 1990s and now runs a private intelligence gathering firm.
CNN claim his investigations on Trump were initially funded by groups and donors supporting Republican opponents during the GOP primaries and further investigation was funded by groups and donors supporting Hillary Clinton when he became a nominee.
Spokespeople for the FBI and the Director of National Intelligence have declined to comment.