Question: Who tracked down and arrested the longest-serving commandant of Auschwitz concentration and extermination camp?

Related documents: [0]  [DOC] Hanns Alexander (6 May 1917 – 23 December 2006) was a German Jewish refugee who tracked down and arrested the Kommandant of Auschwitz Rudolf Höss. [END] 
[1]  [DOC] Rudolf Höss (also Höß, Hoeß or Hoess; 25 November 1901 – 16 April 1947) was a Nazi German "SS"-"Obersturmbannführer" (lieutenant colonel) and the longest-serving commandant of Auschwitz concentration and extermination camp in World War II. He tested and carried into effect various methods to accelerate Hitler's plan to systematically exterminate the Jewish population of Nazi-occupied Europe, known as the "Final Solution". On the initiative of one of his subordinates, SS-"Hauptsturmführer" (captain) Karl Fritzsch, Höss introduced pesticide Zyklon B containing hydrogen cyanide to the killing process, thereby allowing SS soldiers at Auschwitz to murder 2,000 people every hour. He created the largest installation for the continuous annihilation of human beings ever known. [END]  
Answer: Hanns Alexander
Hanns Alexander