Andrew Mountbatten-Windsor, the younger brother of King Charles, has launched legal action against UK police over his arrest earlier this year on suspicion of misconduct in public office.
The action follows revelations from the Jeffrey Epstein files in the United States.
Mountbatten-Windsor, 66, has asked a judge to determine whether Thames Valley Police’s actions against him were lawful.
The development was first reported by Britain’s The Telegraph newspaper on Sunday.
According to a report by CNN, he has lodged a judicial review in relation to search warrants executed at his home on the Sandringham Estate in Norfolk, eastern England, and his former home at Royal Lodge in Windsor.
A court hearing will be held on Thursday, British media reported Monday.
Thames Valley Police confirmed to CNN on Monday that it was “engaged in legal proceedings in relation to warrants previously obtained from the Central Criminal Court,” adding it would not comment further with legal proceedings ongoing.
CNN has also reached out to the UK Judicial Office for comment.
The former Duke of York became the first senior royal in centuries to be arrested in February, in the latest extraordinary development in a yearslong scandal over his ties to Epstein that obliterated his reputation and threw the royal family into crisis.
He was detained on his 66th birthday on February 19 at his new home on his brother’s Sandringham estate.
He was taken to Aylsham police station and questioned for almost 12 hours before being released under investigation.
No charges were filed, and police said its investigation is still ongoing.
Thames Valley Police previously said it was assessing whether the former prince had shared confidential information with Epstein during his decade as a UK trade envoy.
Mountbatten-Windsor has vehemently denied any and all wrongdoing in his dealings with Epstein, denying personal gain from his trade envoy role and insisting he never witnessed or suspected any of the behaviour of which Epstein was accused.
He stepped down from official royal duties in 2019 following a calamitous BBC interview over his friendship with Epstein.
In 2025, King Charles stripped his younger brother of his title as prince following public outcry over a posthumous memoir by Virginia Giuffre, who alleged Mountbatten-Windsor sexually assaulted her as a teenager.
Giuffre, whom Mountbatten-Windsor claims never to have met, died by suicide in April 2025 at age 41.
