Henryk – “The Germans set the houses and stores on fire. They accused the Jews of being responsible for the blaze.”

The 16th research trip to Poland took place in the Warsaw region, in the north and east of the voivodeship. A Yahad – In Unum team conducted its investigation in two territories: the eastern part of the region, which was in the General Government throughout the war, and the North, incorporated into the Reich.

During these two weeks on the ground, Yahad-In Unum interviewed 39 witnesses and identified 20 mass graves.


Prosienica, Guty-Bujno, Zawisty Podleśne, Ostrów Mazowiecka, Turobin-Brzozowa, Koskowo, Grądy, Turobin-Brzozowa, Koskowo, Grady, Krasnosielc, Ostrołęka, Żebry-Chudek, Perzanowo, Maków Mazowiecki, Pułtusk, Przasnysz, Kaki-Mroczki, Białuty, Działdowo, Smoły, Suchocin, Zakroczym, Stanisławowo, Ciechanów, Mława, Radzymin, Ciechanów, Ościsłowo, Strzegowo.


Historical Background:

Although the majority of Jews in the region were deported to Auschwitz and Treblinka, thousands of Jews were killed on the spot in mass graves, such as Ostrow Mazowiecka (500 victims), Pomiechowek (16,000 victims of different nationalities) or Branszczyk (150 victims).


Key Findings:

During this research trip, Yahad-In Unum’s investigation team gathered testimonies about:

– The first shooting of an entire Jewish community in Ostrow Mazowiecka as of November 11, 1939;

– The mass shootings of Jews, the physically and mentally handicapped and members of the Polish intelligentsia at Sewerynow or Oscislowo;

– Deportations of Jews to Treblinka and Auschwitz;

– The Fort of Pomiechowek;

– The shootings of Gypsies;

– The role of the Volksdeustche in the massacres;

– The Germanization of territories incorporated in East Prussia.

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