Czeslaw F. “The Jews were forced to work hard. In winter, every day, several people died from exhaustion, severe cold and disease.”

During 15 days of research in Poland, a Yahad – In Unum team investigated in 28 towns and villages in the Northeastern city of Siedlce. The aim of this trip was to open investigative research in the administrative region of Mazovia, where many Jews lived before the war.

During this research mission, Yahad – In Unum identified 35 mass graves of which about 90% have no memorial, and interviewed 42 witnesses.




Stok Ruski, Klimonty, Mordy, Łosice, Zawady, Węgrów, Wola Orzeszowska, Kostki, Niemojki, Zakrze, Wojnów, Jarnice, Suchożebry, Przygody, Wola Suchożebrska, Kosów Lacki, Sokołów Podlaski, Miedzna, Nowy Bartków, Szczeglacin, Samotrzask, Łopianka, Kałuszyn, Mrozy, Dobre.


Historical Background:

From October 1939; the Warsaw region was incorporated into the General Government of Poland and became part of Distrikt Warschau. Although the majority of the region’s Jews were killed at Treblinka in 1942, thousands were shot on the spot in mass graves, such as at Ostrow Mazowiecka (500 victims), Grojec (200 victims), Chruslice (1929 victims) or Drabrowa Kozlowska (100 vicitms)..


Key Findings:

– Deportations of the Jewish population to Treblinka;

– Forced labor camps for Jews;

– Isolated mass shootings despite the proximity of the extermination camp;

– POW camps;

– Operation 1005.

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