Prince Harry appeared in court to give testimony in his case against Mirror Group Newspapers. On Tuesday morning, the Duke of Sussex arrived at the High Court of the Royal Courts of Justice in London to give evidence supporting his case against Mirror Group Newspapers (MGN).

Harry made the accusations as he became the first high-ranking member of the British royal family to appear as a witness in court in 130 years.

Prince Harry took the stand in a London courtroom, testifying in his lawsuit against Mirror Group Newspapers, who the duke claims used "unlawful information gathering" against him for decades. NBC News’ Meagan Fitzgerald breaks down the main takeaways from Prince Harry’s testimony and how attorneys for the Mirror Group Newspapers are responding to his allegations.

Prince Harry stepped into courtroom witness box Tuesday to hold Britain's tabloid press accountable for its "destructive" role throughout his life.

"It was a downward spiral, whereby the tabloids would constantly try and coax me, a 'damaged' young man, into doing something stupid that would make a good story and sell lots of newspapers."

Britain's Prince Harry takes the witness stand to give testimony against a tabloid publisher he accuses of phone hacking and other unlawful snooping.

Prince Harry appeared in court to testify in a lawsuit accusing Britain's Mirror Group Newspapers of illegal hacking as he said the tabloids coverage had a "devastating impact" on his mental health.