Warsaw, 5 January 1946. Investigative Judge Alicja Germasz heard the person named below as a witness. Having been advised of the criminal liability for making false declarations and of the significance of the oath, the witness was sworn and testified as follows:
| Name and surname | Marianna Plenzner |
| Age | 46 years old |
| Names of parents | Walenty and Balbina |
| Place of residence | Włochy, Sieradzka Street 25, flat 5 |
| Religious affiliation | Roman Catholic |
| Criminal record | none |
During the Uprising I lived in Włochy. My son took an active part in the Uprising in Warsaw. I learned from his friends that his post was at Czeczota Street 5 in Mokotów.
When the Soviet troops entered Warsaw, I began to look for my son, who had not returned home. I learned from the residents of the house at Czeczota Street 3 that all the residents of these houses and the insurgents had been marched by the Germans to the Mokotów fort. I could not determine whether my son, who had been wounded, was among those who were taken there. Just in case, I also checked the vicinity of Mokotów fort. I learned from the residents of that neighborhood that there had been many Poles in the fort during the Uprising, brought there by the Germans. Two men and a woman who live by the fort (I don’t know their surnames or addresses, but I can point out the house in which they live) told me that they had seen during the Uprising how the Germans had dug a large pit on the fort premises. At the same time they had seen a group of young boys standing nearby, who had been anxiously inquiring about their fate. These boys were soon gone and the pit was covered with earth. The people who told me this showed me the spot where the pit had been. Later the Municipal Funeral Service carried out an exhumation there, at which I was present. 18 men and a woman were uncovered. I did not find my son. It was in December 1945.
The report was read out.
Witness interview report
Warsaw, 21 January 1946. Investigating Judge Alicja Germasz heard the person named below as a witness, who testified as follows:
Marianna Plezner, known in the case
I submit the surnames of people whom I mentioned in the interview report of 5 January 1946, which are:
Józef Gentek and his wife, residing in Warsaw, Płatowcowa Street 11, flat 3 (currently they have left for the West)
Bolesław Pawłowski, residing in Warsaw, Płatowcowa Street 11, flat 1.