An anonymous letter with unspecified death threats against Bulgarian Prime Minister Boyko Borisov has been received at the government headquarters in the capital Sofia.
The unsigned envelope contained a photograph of Borisov with a bullet attached to it.
The death threats were written in letters cut from a newspaper.
The Ministry of the Interior announced that it had received information about an attack allegedly planned again controversial MP Delyan Peevski and he by law will be protected by the National Service for Protection.
