The 28-year-old son of Norway's crown princess has been charged with raping four women and several acts of violence, and risks up to 10 years in prison, a prosecutor said on Monday.

Marius Borg Hoiby, who was born from a relationship before Crown Princess Mette-Marit married Crown Prince Haakon, has been under investigation since his arrest on August 4 last year on suspicion of assaulting a girlfriend.

He is accused of raping four women while they were sleeping. In at least three of the cases, he met the women the same day and had consensual sex before the alleged rapes, public prosecutor Sturla Henriksbo told reporters.

Hoiby is also charged with filming their genitals without their knowledge.

Henriksbo said investigators had video clips and photographs as evidence.

The four rapes al

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