In an attack on some of the prestigious buildings on Berlin's Museum Island, 70 works and antiques were damaged.
The online Bild writes it, revealing an ambush of October 3, which has remained secret until now.
The Pergamon museum, the Alte Nationalgalerie and the Neues Meseum were affected.
According to the tabloid, suspicions fall on a fanatical conspiracy theorist of 39, Attila Hildmann, who in the past had defined the Pergamon Museum as a "Throne of Satan" and the center of "Satanists and coronavirus criminals".
It investigates.