Prince Harry, Meghan and her mother were involved in a “near catastrophic car chase” involving paparazzi, a spokesperson for the couple has claimed.
The incident happened after the Duke and Duchess of Sussex attended an awards ceremony in New York on Tuesday.
In a statement, their spokesperson said the “relentless pursuit” lasted for over two hours.
They added it resulted in near collisions.
The BBC has not been able to independently verify the details.
In a statement, the New York Police Department (NYPD) confirmed an incident took place and said that numerous photographers “made their [Harry and Meghan’s] transport challenging”.
No injuries or arrests were reported. Buckingham Palace has not yet commented.
There are claims the chase involved half a dozen cars, with reckless driving including going through red lights, driving on the pavement, carrying out blocking moves, and reversing down a one way-way street – as well as taking photographs while driving.
Details are emerging of what seem to have been chaotic scenes. The couple, plus Meghan’s mother Doria Ragland, tried to take shelter from the paparazzi by going to a Manhattan police station.
There was then a plan to use a New York taxi, with a cab flagged down and Harry and Meghan getting inside, but in the end that was spotted and they reverted to their own security vehicles.
The taxi’s driver, Sukhcharn Singh, said he never felt in danger and would not “call it a chase”.
“They were quiet and seemed scared but it’s New York – it’s safe,” he told the Washington Post.