Donald Trump’s eldest son will take the stand today at the New York civil fraud trial surrounding the former president’s business empire.

Donald Trump Jr, a defendant in the case alongside his father, is set to testify as the judge considers whether the Trump Organization and its top executives lied about the value of its properties.

Both Don Jr and his brother Eric – executive vice-presidents at the company – are due to be questioned in court this week. Donald Trump, a former president, is expected to testify next week, before his daughter, Ivanka, who is not a defendant in the case, is set to appear.