20 May 2010 Last updated at 17:27

In pictures: Stolen Paris masterpieces

Dove with Green Peas painted by Pablo Picasso in 1911

Woman with Fan painted by Amedeo Modigliani in 1919

Olive Tree near l'Estaque painted by Georges Braque in 1906

Pastoral painted by Henri Matisse in 1906

Still Life with Candlestick painted by Fernand Leger in 1922

Europe