The latest allegations against Andrew Mountbatten-Windsor centre around a waitress working at Royal Ascot, according to reports.
King Charles's disgraced younger brother, 66, is being investigated by police for allegations of misconduct in public office, with detectives examining the alleged incident as part of the inquiry, according to The Sunday Times.
Andrew is said to have "behaved inappropriately" at the 2002 Berkshire racing event, which was also attended by his mother, the late Queen Elizabeth II.
The event is one of the highlights in the royal calendar and is usually attended by senior royals, who lead the way in the famous carriage procession.
That year, Andrew attended at least two days out of five and was pictured alongside Charles and Prince Edward.
Two years earlier, in 2000, he hosted the disgraced sex offender Jeffrey Epstein and his former girlfriend Ghislaine Maxwell in the royal enclosure on Ladies' Day.
He last attended in 2019, months before he was forced to step down from royal duties following his disastrous BBC Newsnight interview.
Epstein survivor accuses palace of 'cover up'
It comes as a survivor of Jeffrey Epstein accused Buckingham Palace of "covering up" Andrew's actions.
Jess Michaels, who was sexually assaulted by the late financier in 1991 when she was 22, accused the Palace of "protecting" Andrew in an interview with The Telegraph.
© Tim Graham Photo Library via GetOn Friday, it was revealed that the Palace had received emails six years ago showing that Andrew had shared confidential government information during his time as UK trade envoy, according to court documents.
Jess said: "Six years ago, the Palace knew Andrew wasn’t just a problem; he could face a criminal investigation. And they sat on it.
"Protecting him meant doubting her. Virginia Roberts Giuffre was telling the truth, and she didn’t live to see them admit it. That breaks my heart and it should break everyone’s.
"This is what institutions do. They protect powerful men and leave the people they harmed to carry it."
Investigation update
Police gave an update on their investigation into Andrew at the end of last month, with new files being released relating to his appointment as trade envoy in 2001.
© UK Press via Getty ImagesThe position gave him access to senior government and business contacts around the world, as well as sensitive information.
The newly released documents showed that the late Queen was "very keen" for Andrew to take on a "prominent role" promoting UK interests.
Meanwhile, Thames Valley Police Assistant Chief Constable Oliver Wright said: "Our misconduct in public office investigation is continuing. Misconduct in public office is a crime that can take different forms, making this a complex investigation.
"Our team of very experienced detectives are working meticulously through a significant amount of information that has come in from the public and other sources. We are committed to conducting a thorough investigation into all reasonable lines of enquiry, wherever they may lead."
