FILE - Britain's Andrew Mountbatten-Windsor, formerly known as Prince Andrew, looks round as he leaves after attending the Easter Matins Service at St. George's Chapel, Windsor Castle, England, April 20, 2025. (AP Photo/Kirsty Wigglesworth, File)

LONDON (AP) — The former Prince Andrew was arrested and held for hours by British police Thursday on suspicion of misconduct in public office related to his links to Jeffrey Epstein, an extraordinary move in a country where authorities once sought to shield the royal family from embarrassment.

It was the first time in nearly four centuries that a senior British royal was placed under arrest, and it underscored how deference to the monarchy has eroded in recent years.

King Charles III, whose late mother lived by the motto “never complain, never explain,” took the unusual step of issuing a statement on the arrest of his brother, now known as Andrew Mountbatten-Windsor.

“Let me state clearly: the law must take its course,” the king said. “As this process continues, it would not be right for me to comment further on this matter.”

The Thames Valley Police force said Mountbatten-Windsor was released Thursday evening, about 11 hours after he was detained at his home in eastern England. .

Police said he was released under investigation, meaning he has neither been charged nor exonerated.

The police force, which covers areas west of London, including Mountbatten-Windsor’s former home, said Thursday that a man in his 60s from Norfolk had been arrested and was in custody. Police did not identify the suspect, in line with standard procedures in Britain.

Mountbatten-Windsor, 66, moved to the king’s private estate in Norfolk after he was evicted from his longtime home near Windsor Castle earlier this month.

Police previously said they were “assessing” reports that Mountbatten-Windsor sent trade information to Epstein, a wealthy investor and convicted sex offender, in 2010, when the former prince was Britain’s special envoy for international trade. Correspondence between the two men was released by the U.S. Justice Department late last month along with millions of pages of documents from the American investigation into Epstein.

The former prince has denied any wrongdoing.