האמריקאים צוטטו לטלפון של הנסיכה דיאנה ביום בו נהרגה

The American secret service was bugging Princess Diana's telephone conversations without the approval of the British security services on the night she died, according to the most comprehensive report on her death, to be published this week.

Among extraordinary details due to emerge in the report by former Metropolitan police commissioner Lord Stevens is the revelation that the US security service was bugging her calls in the hours before she was killed in a car crash in Paris.

In a move that raises fresh questions over transatlantic agreements on intelligence-sharing, the surveillance arm of the US has admitted listening to her conversations as she stayed at the Ritz hotel, but failed to notify MI6. Stevens is understood to have been assured that the 39 classified documents detailing Diana's final conversations did not reveal anything sinister or contain material that might help explain her death.