** FILE ** Diana, Princess of Wales, and her wealthy companion Dodi Fayed, walk on a pontoon in the French Riviera resort of St Tropez in this Friday Aug. 22, 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.