Generated with Microsoft Designer

Jerome Dewald, 74, was granted permission to show a video to an appeals courts in New York where he was appealing a ruling in an employment dispute.

However, judges cut off the video in confusion after just a few seconds when it appeared to show a younger, clean-cut man addressing the court.

Ms Justice Sallie Manzanet-Daniels asked the appellant if the man in the video was his lawyer, The New York Times reports.

Mr Dewald, who was representing himself, responded: “I generated that. That is not a real person.”

He was denied permission to play the rest of the video and later wrote a letter of apology to the court.

In the letter, Mr Dewald said: “My intent was never to deceive but rather to present my arguments in the most efficient manner possible. However, I recognize that proper disclosure and transparency must always take precedence.”

His case continues before the court — without AI assistance.