The Bulgarian Ministry of Foreign Affairs reported that a Bulgarian man was among the casualties; however, it was later clarified that the ethnic Bulgarian who had died in the blast actually had Austrian citizenship.
Kementerian Luar Negeri Bulgaria menyatakan ada satu warganya yang tewas, tetapi telah diklarifikasi bahwa warganya yang meninggal itu sebetulnya memiliki kewarganegaraan Austria.