The charges relate to events in the northern Serbian province of Vojvodina in January 1942 that became known as the Novi Sad massacre. Hundreds of civilians were forced to walk onto the frozen Danube river, where they were either shot or allowed to fall through the ice. Hungarian estimates suggest that over 3 000 mostly Serbian and Jewish victims were killed during six days of reprisals against the activity of Yugoslav partisans.
Hungary was allied to Nazi Germany and the axis powers during the Second World War, and Képíró was a captain in the Hungarian gendarmerie."

