(FOCUS News Agency - 17/05/11; BTA, Sofia News Agency, Dnevnik.bg, Mediapool, FOCUS News Agency, Public Service Europe, Europol, Official Website of the Bulgarian Interior Ministry - 16/05/11)
(FOCUS Haber Ajansı- 17/05/11; BTA, Sofya Haber Ajansı, Dnevnik.bg, Mediapool, FOCUS Haber Ajansı, Public Service Europe, Europol, Bulgaristan İçişleri Bakanlığı Resmi İnternet Sitesi - 16/05/11)