Previously unknown artworks by masters including Marc Chagall, Otto Dix, Max Liebermann and Henri Matisse are among those found inside a flat in Munich.
Prosecutors said the issue of ownership was still to be clarified. The total value has been estimated at about €1billion (£846 million).
Other artists whose works were found include Pablo Picasso and Henri de Toulouse-Lautrec, as well as Canaletto and Gustave Courbet.
More top news
A dry and fine weekend for most, with scattered showers and heavier downpours in Scotland.
Floods are an annual occurrence in parts of India during the monsoon season, which runs from June to September.
Crew members of the IchorCoal paid tribute to two sailors who died during the 11-month circumnavigation of the globe.