Andrew Mountbatten-Windsor has been served a summons requiring him to give evidence in a High Court fraud case against a Turkish businessman.
Nebahat Isbilen, an elderly Turkish millionairess, claims that Selman Turk, her former adviser, misled her over a £750,000 payment made to the former royal in 2019.
Ahead of the trial, Mr Turk called for Mr Mountbatten-Windsor to be required to give evidence.
This week, a summons was issued calling for him to appear at the High Court in mid December as a witness either in person or by video, the BBC has reported.
Mr Mountbatten-Windsor is not accused of any wrongdoing and the case is
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