On 3 September 1947 in Katowice, the Katowice District Commission for the Investigation of German Crimes, in the person of a member of the Commission for the Investigation of German Crimes, Deputy Prosecutor of the Court of Appeal, K. Jarzębiński, with the participation of a reporter, Władysław Giemza, heard the person named below as a witness, without taking an oath. Having been advised of the criminal liability for making false declarations and of the provisions of Article 107 of the Code of Criminal Procedure, the witness testified as follows:
| Name and surname | Zygmunt Jankowski |
| Age | 49 years old |
| Parents’ names | Władysław and Franciszka, née Ordońska |
| Place of residence | Katowice, Kopernika Street 13, flat 6 |
| Occupation | director of the Disabled Workers Co-operative |
| Religious affiliation | Roman Catholic |
| Nationality | Polish |
| Relationship to the parties | none |
From August 1942 to January 1945 I was incarcerated in the concentration camp in Auschwitz (no. 66706) on charges of active membership in a clandestine organization operating in Warsaw.
I don’t recall the surname of Muhsfeldt, and I don’t recognize the person in the photograph presented to me (the witness was presented with the photograph of Erich Muhsfeldt). I heard the surname of Ludwig, but I cannot say what posts he held and what he did in the camp. As for Grabner, I often saw him on the camp premises and knew him as a head of the Political Department.
I wasn’t interrogated by Grabner and he didn’t use violence against me. However, I know from my friends who were then imprisoned in the camp that he used it against others, and I saw people coming back from interrogation in the Political Department – actually carried by others – beaten black and blue.
Such scenes took place every day, and very often people who had been summoned to the Political Department, which was headed by Grabner, did not return from it. Upon learning that they were to be interrogated in the Political Department, my fellow inmates would be numb with fear of tortures that were used there. Further information pertaining to Grabner’s behavior and his activities on the camp premises could be provided by a former interpreter in the Political Department, Mrs. Dounia Ourisson (Association of Former Political Prisoners, Paris), whom I met after the cessation of hostilities as Dunia Urbańska when she worked as a secretary in the Voivode Office of Public Security in Katowice and who, as far as I know, currently resides in Paris. It was clear from what she said that each interrogation in the Political Department, with the exception of the so-called family matters (divorce, inheritance matters, etc.), was accompanied by inhumane tortures.
Many details pertaining to Grabner can also be provided by Ljudevlt Rosenberg, the Faculty of Law at the University of Zagreb.
I know nothing else. The report was read out.
I have read the report before signing it.