The interned were held in a number of prisons, including the infamous Pawiak where they were subject to brutal interrogations by Nazi officials. After time spent in the prisons of Warsaw, Kraków, Radom, Kielce, Nowy Sącz, Tarnów, Lublin or Wiśnicz, the arrested Poles were transferred to German concentration camps, most notably to the newly created camp of Auschwitz, as well as Sachsenhausen and Mauthausen. Approximately 3,500 members of the Polish intelligentsia were executed at the mass murder sites in Palmiry near Warsaw, Firlej, Wincentynów near Radom, and in the Bliżyn forest near Skarżysko-Kamienna.[1]