Borisov is known for his frequent media appearances
flickr-European People's Party - EPP
Bulgarian Prime Minister Boyko Borisov addresses a press conference alongside his recently appointed deputy, Lilyana Pavlova.
The premier disappeared after his last media appearance on February 16, when mass demonstrations were held across the country to protest against the rising cost of utility bills.
Finance Minister Simeon Djankov resigned on February 18, in a shocking departure which has yet to be explained by the PM.