Polish-Jewish Relations During the Second World War, Emanuel Ringelblum, edited by Joseph Kermish, Shmuel Krakowski, translated by Dafna Allon, Danuta Dabrowska & Dana Keren, 1974 translation of 1944 original, Northwestern University Press, page 135: : The uniformed police has had a deplorable role in the “resettlement actions”. The blood of hundreds of thousands of Polish Jews, caught and driven to the “death vans” will be on their heads. ... In the subsequent “actions,” when the Jewish Order Service was liquidated as well, the Polish Police force was utilized. It was like that in Biala Podlaska, for example, where the Polish Police conducted the extermination “action” against the Jews in October 1942. I heard from an eyewitness of this “action” that the local fire-brigade, jointly with the uniformed police, discovered sixty Jews in the house where my woman informant was staying, herself among them. The uniformed police [usually] maltreated captured Jews terribly. They would hand over captured Jews to the Germans, who would shoot them on the spot. his time, thanks to the large amount of the bribe offered, the captured Jews were not shot but were sent to Miedzyrzec Podlaski, where the remnant of the Jews from Biala Podlaska were being concentrated. This remnant was shortly afterwards sent to Treblinka.
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THE POLISH POLICE: Collaboration in the Holocaust, Jan Grabowski, United States Holocaust Memorial Museum, 2016, "For a Jew, falling into the hands of the Polish police meant, in practically all known cases, certain death. And death followed the Blue Policemen everywhere; Wodzisław, Opoczno, Warsaw, Biłgoraj, Węgrów, and Łochów were by no means unique. Neither were the methods used by the Polish police. The historical evidence—hard, irrefutable evidence coming from the Polish, German, and Israeli archives—points to a pattern of murderous involvement throughout occupied Poland. Emanuel Ringelblum, himself a victim of Polish detectives, suggested that the Polish policemen were responsible for the deaths of “hundreds of thousands of Polish Jews.”