Tens of thousands rallied on Saturday in downtown Belgrade against populist President Aleksandar Vucic and his government, the latest in a series of anti-corruption protests that have shaken his 13-year firm grip on power.

There are fears of unrest in the capital amid a long-standing protest against Aleksandar Vucic and his government.

Serbia’s capital Belgrade is on edge ahead of a major rally this weekend, with President Aleksandar Vucic's government ramping up efforts to dissuade people from attending.

Tens of thousands of people have taken part in a major anti-government rally in the Serbian capital Belgrade. The action, led by students, is being seen as the culmination of months of anti-corruption protests which have posed the largest challenge to President Aleksandar Vucic's decade-long rule.

The rally on Saturday in the capital, Belgrade, came as protests have spread to towns around the country and have drawn increasingly insistent calls that President Aleksandar Vucic step aside.

Police deployed hundreds of officers in full riot gear in and around Pionirski Park, where supporters of Aleksandar Vučić have camped this week inside a ring of parked tractors.