 On 27 June Zvizdić and other Muslim and Albanian leaders (including Aćif Hadžiahmetović, Xhafer Deva, Ferhat Bey Draga and Ahmet Daca) negotiated with representatives of Chetniks of Draža Mihajlović.The negotiations ended with agreement on cooperation in the joint struggle against Communists.Milorad Ekmečić refer to Zvizdić as Muslim Chetnik leader.