Large crowds of flag-waving protesters converged after meeting up at several agreed-on protest venues in various parts of Belgrade, which was placed on high alert.

Serbian anti-corruption protesters, riot police, and supporters of President Aleksandar Vucic faced off in central Belgrade on Saturday as tens of thousands of people turned out for massive anti-government rallies following a night of sporadic clashes.

The rally was part of a nationwide anti-corruption movement that erupted after a concrete canopy collapsed at a train station in Serbia's north in November, killing 15 people.