The European Federation of Journalists (EFJ) has today received an official complaint drafted by the Balkan Investigative Reporting Network (BIRN) which draws the attention to alarming developments in Serbia. According to the network, the Serbian Prime Minister, some media that support his administration and other high-ranking government officials are conducting unprecedented attacks against critical voices. After a series of investigations on issues of public interest, the Serbian authorities and pro-governmental media organisations started a public campaign against BIRN journalists labelling them as “EU mercenaries, spies and liars” or people working against Serbian national interests. “We are alarmed and particularly concerned by what appears to…