In 1912 during the First Balkan War, Kochan was acceded to Bulgaria and shortly after its population was forced to convert from Islam to Christianity. But soon Bulgaria was drawn into the Second Balkan War and the local inhabitants formed guerrilla corps together with the inhabitants of the villages of Vaklinovo, Lyubcha, Valkosel and Dospat. Detachments of 30, 50 and 60 insurgents were formed to counter the Bulgarian haidouks and eventually the Bulgarian military. On the eve of 27 September 1913 they attacked a Bulgarian frontier post adjacent to the village of Chavdar. Finally the appointed priest in the village was expelled and Islam restored. Due to the fear of revenge or second baptism in 1914 15 families emigrated to the village of Kocapınar, Balıkesir Province, Turkey. After the Treaty of Lausanne in 1923 all Muslims from Drama Prefecture were expelled from Greece. Some Pomaks found temporary shelter in Kochan where they prepared for emigration to Turkey. After two years, in 1925, they left dragging along some inhabitants of Kochan with them and settled in the villages of Edirne Province, but after all some of the refugees remained in Kochan.