Insults on ethnic, personal and professional grounds have been levelled against Gruhonjic on the international neo-Nazi and racist web site "Stormfront", with the reporter's photo published on the web site.
Serbian President Boris Tadic, leaders of the Vojvodina government, and professional and nongovernmental organisations have urged protection for Gruhonjic and an investigation to find those responsible for the incident.
Gruhonjic, who is also president of Vojvodina's Independent Association of Journalists, has intensively reported about last year's attack of the neo-Nazi group "Nacionalni stroj" (National Machine) on participants in a panel discussion on anti-fascism.