Očekuje se da će Filchev, koji je od 1999. do 2006. radio kao glavni tužilac zemlje, biti ispitivan i po pitanju svoje uloge u zataškavanju istrage pod kodnim nazivom "Biznismeni".
Filchev, who served as the country's chief prosecutor from 1999 until 2006, is also expected to be interrogated about his role in covering up an investigation code named "Businessmen".