Brazilian police were flying in a helicopter on a drug raid when they made a startling find: a huge swastika at the bottom of a swimming pool, RT.com reports. After investigating, police say the Nazi symbol had been there for 13 years but they can't press charges because it's on private land. The property owner says he doesn't publicly advocate Nazi ideas, according to local media. His town of Pomerode, however, is about 90% German, and Brazil has been home to famous expatriate Nazis, including Josef Mengele and Franz Stangl. One of the world's biggest Oktoberfest celebrations is held in the nearby city of Blumenau, the Telegraph reports. (More Nazis stories.)