THE FBI was tipped off that the three Kennedy brothers, Marilyn Monroe and members of Frank Sinatra's Rat Pack held sex parties in President John F. Kennedy's suite at New York City's The Carlyle hotel.

An FBI report on the alleged orgies at the hotel was prompted by a July 1965 disclosure from a "reliable" mafia informant that the mob wanted to use women supplied by "associates of Frank Sinatra" to embarrass the Kennedys in New York, the New York Post reported.



Women were to "be placed in compromising situations" with Robert and Ted Kennedy and their brother-in-law, actor Peter Lawford, the confidential memo said.



The mob wanted to smear Robert Kennedy because of his war on organized crime as US attorney general from 1961 to 1964, according to the informant. The FBI did not investigate the claims, the bureau said.



The documents were among 2352 pages of FBI files unveiled yesterday on Ted Kennedy, who died last August after a battle with cancer.



The file on the mob plot began with the informant's disclosures to the FBI's Milwaukee office. The FBI added an unsigned statement that said a multimillionaire Manhattan divorcee knew about the orgies.



"It was reported that Mrs Jacqueline Hammond, age 40, has considerable information concerning sex parties," the statement said.



Among those who took part were John, Robert and Ted Kennedy, Monroe, Sinatra, Sammy Davis Jr, Lawford and his wife, Patricia Kennedy, the statement added.



It also indicated that Hammond, who was divorced from a US ambassador, was credible.



However, an FBI summary of the documents released yesterday said the bureau did not consider the Milwaukee and Hammond information "solid."



Originally published as FBI kept files on presidential 'orgies'