Days after launching an injunction in a civil case against Closer magazine, Kate Middleton and Prince William have filed a criminal complaint in a French court.

Seeking justice against those who disseminated Kate Middleton topless photos last week, the complaint asks prosecutors to charge the paparazzo behind the shots.

Of course, there was no name listed in the royals' criminal complaint, as it's unclear who was responsible for taking the pics published in the celebrity gossip mag.

Under French law, those convicted of violating Will and Kate's privacy - the unnamed paparazzo and Closer's editor, in theory - could face thousands of euros in fines.

A possible one-year jail sentence is also on the table, albeit unlikely.

As it happened, Closer removed the pics from its website on Friday shortly after being sued, and before the criminal complaint was even filed by the royals.

However, Closer's Italian sister publication, Chi, ran a 26-page spread today of Kate Middleton nude and topless images, many of them the same as Closer's.

A statement released by Mondadori, the group that owns Chi and Closer, defended the decisions made by the respective editors to run a report on the pictures:

"The publisher respects the arguments put forward by the editors."

Watch Closer's editor stand by the decision after the jump ...