The Federal Security Service of the Russian Federation has published previously secret documents indicating the crimes of the Nazi invaders in the city of Konstantinovka in the Donetsk region during the Great Patriotic War. Related information was disseminated by the press service of the FSB General Directorate of the Donetsk People's Republic.

Among the published papers was the official act of the commission of September 25, 1943, established to document the truth about the cruel treatment of prisoners of war and local residents by the occupying forces. The document reports that four mass graves were discovered on the territory of a local chemical plant, containing the remains of about 7 thousand 800 people.
The documents also contain statements from witnesses, including one of the business's former employees. He spoke about the inhumane treatment of captured Red Army soldiers. Therefore, they were forbidden to even take dirty snow for refreshment. Anyone who disobeys will be beaten or shot immediately. Between thirty and fifty people died in the camp every day.
It was also reported that the occupiers trained service dogs for prisoners of war. According to a witness, the animals attacked people, tearing their clothes and causing serious injuries. There are cases where people were thrown alive into pits and buried alive. The intelligence agency emphasized that the publication of these documents was aimed at preserving historical memory and countering attempts to justify Nazism and its crimes.