Donald Trump's youngest son contacted UK police saying he witnessed a friend in London being beat up during a video call, a court has heard.

Barron Trump, 19, told police he had friends call 999 from the US so that he could report the alleged attack in January 2025.

Matvei Rumiantsev, 22, is on trial at Snaresbrook Crown Court accused of assault and two counts of rape, among other charges, against the alleged victim, who cannot be named for legal reasons.

He denies assault, actual bodily harm, two counts of rape, intentional strangulation, and perverting the course of justice by pressuring the woman to withdraw her complaints.

Trump called the alleged victim on 18 January last year, the court heard. Shortly after placing the call, the US president's fifth child contacted the police and said she was being assaulted.

I'm calling from the US, uh I just got a call from a girl, you know, she's getting beat up, he said, according to a transcript of the call released by the Crown Prosecution Service.

When asked by the operator how he knows the woman, he said: I don't think these details matter, she's getting beat up but OK fine, also I met her on social media, I don't think that matters.

The operator responded: Can you stop being rude and actually answer my questions? Trump was later asked by police to provide a witness statement and said in an email on 2 May that what he saw had been very brief indeed but indeed prevalent.

He said he had not expected that his call to the woman would be answered because of the time difference, but it was picked up by a shirtless man with darkish hair. This view lasted maybe one second, he said, adding the view then flipped to the victim getting hit while crying. This whole interaction had lasted five to seven seconds.

Rumiantsev denies the charges, which date between November 2024 and January 2025. Prosecutors allege he strangled the woman the evening of 17 January last year.

She later called the police, and the Russian national was arrested on the morning of 18 January and taken into custody.

The defendant told jurors that the two had been drinking together that night and into the early morning, and had consensual sex during that time.

Giving evidence on Thursday, Rumiantsev said an argument broke out and that the woman was completely hysterical, crying, screaming, shouting at me. He said he had held her arms in self-defence to prevent her from hitting him.

Earlier, Rumiantsev told the court that he learned about the woman's friendship with Trump in October 2024 - when she asked him to take a photograph of a chat between them on her phone.

The trial continues.