On 1 June 1947, Mendel Sierota appeared in the office of the police of the United Nations Relief and Rehabilitation Administration in Stuttgart, Western section no. 1002, camp no. 664, Reinsburgstrasse, and made the following declaration:
| Name and surname | Mendel Sierota |
| Date of birth | 24 April 193[...] in Kozienice |
| Place of residence | Reinsburgstrasse 124, Stuttgart |
| Registered as | Displaced Person |
| Card number | 152547 |
I was detained in the camp in Pionki near Radom from November 1942 to June 1944. SS- und Polizeiführer [SS and police leader] Böttcher very often visited the camp. He was the head of the whole district of Radom. Every time he had a gallows set up and then, after roll-call, he picked every tenth person and ordered their hanging. He would be present during the execution, explaining to the executioner how to put on a noose etc. This is how my colleague Uszer Birnbaum and my relative Szmul Rubinstein were hanged. Böttcher’s “inspections” occurred every two weeks.
I declare, in lieu of an oath, that the above is true to facts. I am aware of the criminal liability for making false declarations. I am ready to appear before a court as a witness.