
Janković extended his condolences over the tragic incident, saying that firefighters will always sacrifice their lives to save others.
Iran's flag was flown at half-mast as a sign of mourning on Iranian embassy in Slovenia on January 21.
Slovenian political, economic and cultural officials as well as foreign ambassadors, diplomats and students hailed signing the memorial book.
Plasco Trade Center, the 17-storey building collapsed in downtown Tehran while a number of firefighters were inside the building to rescue those trapped in the huge fire.
Plasco, built in 1962, was the first high-rise building in the Iranian capital.
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