Marius Borg Høiby, son of the crown princess of Norway, pleaded not guilty to four counts of rape in his trial that began Tuesday in Oslo.

Marius Borg Høiby, the crown prince's blond stepson, is accused of 38 charges in a case that has attracted global interest.

Marius Borg Høiby arrested on suspicion of assault, making threats with knife and violating restraining order, police say