Students and other opponents of Serbia's populist president are gearing up for a major rally in the capital over the weekend as momentum builds in favor of their demands for major changes in the Balkan country.

University students have staged almost daily rallies since a concrete canopy at Novi Sad railway station collapsed in November, killing 15 people.

Students and anti-government protesters block access to the offices of state broadcaster Radio Television of Serbia (RTS), keeping employees out and forcing some of the live programming to go off air,

Serbian protesters blocked offices of the state broadcaster in the capital and second-largest city Novi Sad overnight, in a bid to draw attention to their months-long rallies against the rule of President Aleksandar Vucic.