Warsaw, 20 May 1946. Judge Halina Wereńko, delegated to the Commission for the Investigation of German Crimes, interviewed the person named below as a witness. Having advised the witness of the criminal liability for making false declarations and of the significance of the oath, the judge swore the witness in accordance with art. 109 of the Code of Criminal Procedure. The witness testified as follows:
| Name and surname | Irena Gertruda Helena Ambrożewicz née Cybulska |
| Names of parents | Ludwik and Helena née Srokoczka |
| Date of birth | 17 March 1903 |
| Occupation | employed at the Ministry of Industry, residing with her son |
| Education | secondary education and a gardening course |
| Place of residence | Warsaw, Lwowska Street 3, flat 7 |
| Religious affiliation | Roman Catholic |
| Criminal record | none |
My brother, Zygmunt Cybulski, born on 16 February 1899 in Lwów, a graduate of a secondary school of commerce, son of architectural engineer Ludwik Cybulski, resided in Lwów until 1941 and then moved to Warsaw. I don’t know whether he worked in a Polish Underground secret organization.
On 3 December 1943 my brother left the house at Lwowska Street 17, flat 3, where we lived, and never came back. That day, chauffeur Ignacy Kandulski drove him to the corner of Krucza and Nowogrodzka streets. At that time my brother worked as a clerk at the Provisional Administration of Seized Properties [Zarząd Komisaryczny Zabezpieczonych Nieruchomości], where he handled resident registrations. On 10 December 1943, at the police station on Krochmalna Street, I left a package for my brother, which was accepted. I received my brother’s detention card for Pawiak prison.
I had not been notified that my brother was in prison. Looking for him through various channels I finally made my way to the police station on Krochmalna Street.
I wish to note that the fact that my brother might have been arrested was suggested to me by the visit of two men wearing plain clothes on 7 December 1943, who said that they were from the criminal police; they searched my brother’s belongings and were asking about him as well.
I have described the history of my struggles to have my brother freed in an attachment to this testimony.
On the list posted on 17 December 1943 (dated 15 December 1943), under number 101, among the names of executed persons, I found the name Zigmunt Cibulski, born on 16 February 1899. Judging by the date of birth and the first name, the second letter of thesurname was misspelled on the poster, but this was indeed my brother, since the date of birth and the first name were correct.
I never received any official notification concerning my brother’s death, apart from the posted announcement. I don’t know whether my brother was charged with anything andwhat that charge may have been.
The report was read out.