When in January 1933 Adolf Hitler was appointed Chancellor, the Nazi dictatorship began, but even then, Ossietzky was one of a very small group of public figures who continued to speak out against the Nazi Party. On 28 February 1933, after the Reichstag fire, he was arrested and held in so-called protective custody in Spandau prison. Wilhelm von Sternburg, one of Ossietzky's biographers, surmises that if Ossietzky had had a few more days, he would surely have joined the vast majority of Writers who fled the country. In short, Ossietzky underestimated the speed with which the Nazis would go about ridding the country of unwanted political opponents. He was detained afterwards at the Esterwegen concentration camp near Oldenburg, among other camps. Throughout his time in the concentration camps, Ossietzky was mercilessly mistreated by the guards while being deprived of food. In November 1935, when a representative of the International Red Cross visited Ossietzky, he reported that he saw "a trembling, deadly pale something, a creature that appeared to be without feeling, one eye swollen, teeth knocked out, dragging a broken, badly healed leg . . . a human being who had reached the uttermost limits of what could be borne."