An armistice was agreed on 3 December 1912 between the Ottomans and Bulgaria, the latter also representing Serbia and Montenegro, and peace negotiations began in London. Greece also participated in the conference but refused to agree to a truce and continued its operations in the Epirus sector. The negotiations were interrupted on 23 January 1913, when a Young Turk coup d'état in Constantinople, under Enver Pasha, overthrew the government of Kâmil Pasha. Upon the expiration of the armistice, on 3 February 1913, hostilities restarted.