Anti-government protesters barred access to the offices of state broadcasters in Serbia's capital Belgrade and the second-largest city on Tuesday, keeping employees out and forcing some live programming off the air.

The protests, triggered by a deadly collapse of a train station canopy in November, have rocked the populist rule of President Vucic and his firm grip on power

Several hundred university students blocked the entrance to Serbia’s public television station (RTS) in central Belgrade late Monday, returning the following day in an ongoing protest against what they allege is pro-government bias.

The anti-government protesters have said the blockade will continue for at least 22 hours. They accuse Serbia's public broadcaster of being biased towards President Aleksandar Vucic.

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.