Marius Borg Høiby gives evidence after the first woman he is alleged to have raped told the court she believed she had been drugged.

The son of Norway’s crown princess broke down on Wednesday as he denied that videos on his phone showed acts of rape, during the first day of his testimony in his trial for rape and domestic violence.

Facing 38 charges against him, Marius Borg Høiby pleaded not guilty to raping four women and other serious offences but admitted breaking a restraining order, transporting marijuana and speeding while...