Then new constitution issued by decree in Jugoslavia during the second half of 1931 crystallised the installation of a fascist military dictatorship which in effect had, by that stage, already been in place for more than a year. "Progressive" (antifascist) political movements were suppressed. Communists suffered persecution. Milan and Lisa Gavrić made their home in Bosnia, settling with their daughter in Tuzla, which was the city in which Milan had grown up. Communist organisations were being set up in opposition to the new régime across the country. Milan Gavrić became secretary of the Tuzla region party leadership team. Lisa backed her husband and worked for the party. According to one source she also acted as a point of contact between the communists in Jugoslavia and the Young Communists in Vienna. In January 1933 the Communist groups in Tuzla and a number of other Bosnian cities and towns were betrayed to the authorities by a spy. Members were arrested and charged with high treason. Milan Gavrić was among those arrested and sentenced to several years of imprisonment. He managed to escape and subsequently fought with Tito's partisans against the German occupation. Lisa Gavrić was convicted of "communist activities" and received a ten month prison sentence. She was later expelled from Jugoslavia and at the start of 1934 fled north with her daughter to Vienna.