** FILE ** Diana, Princess of Wales, smiles as she arrives at the Tate Gallery in London in this Tuesday July 1, 1997 file photo. A three-year inquiry into the death of Princess Diana and Dodi Fayed has concluded that allegations of murder were unfounded, and that there is no reason for suspecting the involvement of the royal family, a senior police officer said Thursday, Dec. 14, 2006. "Our conclusion is that, on all the evidence available at this time, there was no conspiracy to murder any of the occupants of the car. This was a tragic accident," said Lord John Stevens, former chief of the Metropolitan Police, who led the investigation of the deaths of Diana, 36, and her companion Dodi Fayed, 42. They were killed along with chauffeur Henri Paul when their Mercedes crashed in the Pont d'Alma tunnel in Paris on Aug. 31, 1997, while the couple was being chased by media photographers. (AP Photo/Jacqueline Arzt)