On 28 November 1988 deputy district prosecutor Ryszard Wiączek (MA) from the District Prosecutor’s Office [in Węgrów], delegated to the Commission for the Investigation of Hitlerite Crimes in Białystok, proceeding in accordance with the provisions of Article 4 of the decree of 10 November 1945 (Journal of Laws No. 51, item 293) and Article 129 of the Code of Criminal Procedure, without the participation of a reporter, interviewed the person named below as a witness. Having been advised of the criminal liability for making false statements, the witness confirmed with his own signature that he had been informed of this liability (Article 172 of the Code of Criminal Procedure). The witness then testified as follows:
| Name and surname | Jerzy Postek |
| Parents’ names | Stanisław and Julianna, née Pietrak |
| Date and place of birth | 22 November 1932, Stoczek Węgrowski, Siedlce voivodeship |
| Place of residence | Stoczek Węgrowski, Siedlce voivodeship |
| Occupation | retiree |
| Education | 7 years of elementary school |
| Criminal record for perjury | none |
| Relationship to the parties | none |
I have lived in Stoczek (Siedlce voivodeship) since I was born. I remember the occupation quite well. [At the time] I was living with my parents in Stoczek. I know that my father was sheltering Jews during the occupation. I remember that in 1942 Jews came to my father. I was ten years old back then and wasn’t concerned with these matters much. [My parents] never let me in on them, as I was too young. I knew there were Jews [at our place], because this was impossible to hide. Where these Jews came from, how old they were and how many there were, I do not know. My mother and father were feeding those Jews. My siblings, [especially] the older ones, know more about this. On the day when the Germans arrived, found the Jews, then killed my mother and took my father and brothers, I was at school and didn’t return home immediately, only after about two weeks, perhaps longer. [All] I know is what I heard from my brothers. As I was told, my mother was beaten to death with sticks and my father later perished at Auschwitz. My two brothers, Henryk and Wacław, were also taken by the Germans and never returned. My brothers told me that my father was delivering food to the Jews who were sheltering in hideouts throughout our buildings. That is all I know in this case. I was a child and I was not privy to these matters, out of concern that I would spill the beans. That is the end of my testimony in this case. I have signed the report after having confirmed it is consistent with my testimony.