Prince Harry has launched a High Court libel action against the publisher of the Daily Mail.
The Duke of Sussex, 37, lodged a claim against Associated Newspapers Limited (ANL) on Wednesday afternoon, court filings show.
It is not known which of the publishers’ titles, which also includes The Mail On Sunday and MailOnline, the claim relates to.
There is no confirmation which article the claim relates to.
A spokesperson for the duke said: “I can confirm the duke has filed a complaint against Associated Newspapers Limited.”
It comes after it emerged Harry was involved in litigation against the Home Office over his security arrangements when he is in the UK.
He is bringing a High Court challenge against a Home Office decision not to allow him to personally pay for police protection for himself and his family while in the UK.
Harry wants to bring his two-year-old son Archie and baby daughter Lilibet to visit the UK from the US where he now resides.
His lawyers have said the duke and his family are “unable to return to his home” because it is too dangerous.
His wife, the Duchess of Sussex, previously won a privacy claim against ANL over articles which reproduced parts of a “personal and private” handwritten letter to her estranged dad Thomas Markle.
Meghan, 40, was awarded £1 nominal damages, along with an undisclosed sum which she donated to charity.
ANL was also ordered to issue a front-page apology and pay the duchess’s legal costs.
An appeal by ANL was dismissed by senior judges in December last year.