In 2004, historian Tomasz Chinciński in a publication of Institute of National Remembrance (IPN) summarized recent research related to Bloody Sunday, confirming that the majority of historians agree that an "insurrection" by agents who had arrived from the Third Reich as well as some German inhabitants of Bydgoszcz took place. He has published a work detailing new evidence of German diversionary activity in September 1939 in Poland. There are numerous Polish eyewitness accounts of action of a German fifth column which included members of local minority; Pospieszalski cited multiple witnesses for at least 46 cases of German civilians opening fire on Polish troops. There are numerous Polish Army reports and German documents confirming the saboteur actions of armed German Poles in other cities. According to German historians, any members of the fifth column, if present in the city, were infiltrators from Germany, not natives of Bydgoszcz. Eyewitness accounts have been criticised by Richard Blanke. In 2004, Chinciński discussed previously unpublished reports of Polish Army Pomorze, which reported "a large scale diversion" in Bydgoszcz on September 3 and numerous smaller incidents in surrounding area around that time.
In 2004, historian To.masz Chinciński in a publication of Institute of National Remembrance (IPN) summarized recent research related to Bloody Sunday, confirming that the majority of historians agree that an "insurrection" by agents who had arrived from the Third Reich as well as some German inhabitants of Bydgoszcz took place. He has published a work detailing new evidence of German diversionary activity in September 1939 in Poland. There are numerous Polish eyewitness accounts of action of a German fifth column which included members of local minority; Pospieszalski cited multiple witnesses for at least 46 cases of German civilians opening fire on Polish troops. There are numerous Polish Army reports and German documents confirming the saboteur actions of armed German Poles in other cities. According to German historians, any members of the fifth column, if present in the city, were infiltrators from Germany, not na,tives of Bydgoszcz Eyewitness accounts have been criticised by Richard Blanke. In 2004 Chinciński discussed previously unpublished reports of Polish Army Pomorze, which reported "a large scale diversion" in Bydgoszcz on September 3 and numerous smaller incidents in surrounding area around that time.