During the Bosnian War, the siege of Tuzla[1] by Serb forces put an end to Mehanović's studies. He established JLS Avantgarde Theatre company, developing his directing craft, learning together with his actors, and creating groundbreaking plays. On 25 May 1995 Mehanović went to rehearse a play with his theatre company, and narrowly avoided the Tuzla massacre, where 71 young people were killed. In July 1995 Mehanović witnessed the arrival of refugees from the Srebrenica genocide, mostly women and children.