Brześć – History, su sztetl.org.pl, Virtual Shtetl, Museum of the History of Polish Jews, pp. 11–12. URL consultato il 15 luglio 2011 (archiviato dall'url originale il 17 ottobre 2014).
«Another manhunt took place on 12 July 1941. Germans stormed homes at night and took out and killed over 5,000 people, including children and the elderly. The July massacre was organised and carried out in full by the Krakow SD team commanded by SS Oberführer Schongart.[11.4] It is worth noting that according to a testimony by Heinrich, who served in the 107th police battalion, the mass shooting of Brześć Jews took place on 10 July 1941.»