The attack on Poland ended with the Nazi–Soviet parade in Brześć, which was held on 22 September 1939. Brześć was the location of the first Nazi-Soviet meeting organised on 27 September 1939, in which the prisoner exchange was decided prior to the signing of mutual agreements in Moscow a day later. In the following month, the Gestapo and the NKVD met in Lwów to discuss the fate of civilian populations during the radical reorganisation of the annexed territories. They met again in occupied Przemyśl at the end of November, because Przemyśl was a border crossing between the two invaders. The next series of meetings began in December 1939, a month after the first transfer of Polish prisoners of war. The conferences were held in occupied Kraków in the General Government on 6–7 December 1939; and continued for the next two days in the resort town of Zakopane in the Tatra Mountains of southern Poland (100 km from Kraków) on 8–9 December 1939. The Zakopane Conference is the most remembered. From the Soviet side, several higher officers of the NKVD secret police participated in the meetings, while the German hosts provided a group of experts from the Gestapo.