Crowds of protesters are gathering in Belgrade for a massive rally in the Serbian capital seen as a culmination of months-long protests against populist President Aleksandar Vucic.

Tens of thousands of people have descended on Serbia's capital to protest against the deaths of 15 people in a railway station collapse. The government has put attendance at 107,000 across Belgrade. Organisers and independent monitors have yet to give their estimates.

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.