Princess Diana tragically died in 1997 in the Pont de l'Alma tunnel in Paris, after paparazzi chased down her car and caused it to crash. The truth about what happened that night has remained one of the world's biggest mysteries, and several conspiracies have arisen in the years that followed. One of the biggest questions that have lingered since that night, when she, boyfriend Dodi Al-fayed, driver Henri Paul and bodyguard Trevor Rees-Jones fatally tried to escape the marauding paparazzi in Paris, is whether Diana was in fact pregnant.
In the weeks leading up to the accident, media began speculating about whether she might have fallen pregnant, a theory that was supported by the fact that she had told friends she had a "big surprise".
In 2003, a top French policeman claimed to the UK media that Diana was, in fact, pregnant, and the information has been kept concealed to avoid the embarrassment of her family. Documents confirming this were kept hidden, The Independent reported.
The conspiracy theory goes that the very notion the future King of England might have a Muslim half-sibling was deeply unsettling for the Royal Family at the time. It’s a theory that Dodi’s Dad, billionaire and former Harrods owner Mohamed Al-Fayed, has long propagated.
A new book as revealed details about that night. Professor Angela Gallop is one of the UK’s leading forensic scientists and has reviewed evidence samples taken at the crash site. She was asked to be a part of 2004’s Operation Paget which was set up after the Queen’s coroner asked UK police to look into a number of questions around the crash, including whether the Princess was expecting.
An extract published by The Times has Gallop explain that: “the blood transfusions the princess had received after the accident might have complicated the pregnancy test. So the best sample for testing was some blood that had been recovered from the carpet in the footwell of her seat in the Mercedes.”
Gallop’s team confirmed that Diana was not pregnant when died that night in 1997. Their work on blood samples taken from the Princess showed no trace of the pregnancy hormone human chorionic gonadotropin (hCG).
WATCH: George Clooney Comes To Pregnant Meghan Markle's Defense, Comparing Her Plight To Princess Diana's.
This article originally appeared on marie claire Australia.