The Metropolitan Police is assessing new information it has recently received about the deaths of Princess Diana and Dodi Al Fayed in 1997.
Scotland Yard said it was "scoping" the information and "assessing its relevance and credibility".
It said it was "not a re-investigation" into the deaths of the couple in a Paris car crash on 31 August 1997.
An inquest in 2008 found they had been unlawfully killed due to the "gross negligence" of their driver.
In a statement, the Metropolitan Police said the assessment would be carried out by officers from the specialist crime and operations command.