As a result of the investigation it has been established that the German soldiers began the extermination of Polish population once they entered Grodno in late June 1941. The criminal activities were undertaken primarily against the representatives of the Polish intellectual circles. Victims were people stopped in the street hold-ups who were later placed in prison and then transported to concentration camps. In the Grodno old city a ghetto for Jewish inhabitants was arranged. The Polish efforts of armed resistance brought about executions in the Naumowicze forts. As a result of the undertaken investigative activities names of the executed hostages were established. They were officers of the Polish Army, engineers, doctors, priests, teachers and a Vice-President of Grodno. The targeted victims were murdered together with their families. The activities which are currently under way aim at establishing the names of other, unknown victims. October 3rd, 2002