Videos posted social media show protesters scattering after a loud sound, with some speculating that it was caused by a sonic cannon.
Protests in Serbia, Georgia and Hungary reflect mounting discontent over corruption and democratic backsliding, while Romanians turn out to show commitment to EU values in face of rising far right.
Around 300,000 people flooded the streets of Belgrade in an unprecedented display of discontent with President Aleksandar Vucic's government.
Serbia could be heading toward snap elections after the country saw its largest protest in history on March 15, raising pressure on the government and President Aleksandar Vucic to respond.
Video footage shows protesters scattering during the 15-minute silence to honour the victims of the Novi Sad railway station canopy collapse.
Students, workers and farmers travelled to Belgrade for Serbia's largest protest in decades.
Serbian officials have accused protesters of damaging the economy, but meeting the demands for more efficient institutions and a stronger judiciary would improve the investment climate in the long-term.
Serbia's government is preparing for significant unrest ahead of the demonstration with tensions already rising in Belgrade.
Protesters spurred by anger over what they perceive as biased coverage of anti-government demonstrations by the public broadcaster.
US president's son is expected to play a role in advancing the Trump Organisation’s business interests in the region, notably a controversial real estate project in the Serbian capital.
Investigative news site VSquare says a team from Hungary's Counter-Terrorist Centre was deployed to Bosnia with a mission to help Bosnian Serb leader Milorad Dodik escape in the event of a court-ordered arrest.
Growing risk of violent clashes between Republika Srpska and the state-level authorities prompt increase in EUFOR presence.
Serbia, which maintains strong historical ties with Russia, has walked a delicate line between its allegiance to Moscow and its aspirations to join the EU.
Political instability has stymied Serbia's efforts to secure and investment-grade rating, but country is still set to achieve one of Europe's highest growth rates this year.
Largest numbers of tourists recorded from neighbouring countries, plus Russia and Turkey.
Leaders of Bulgaria, Georgia and Hungary back Trump in row with Ukrainian president and slam Europe's handling of the war.
As European countries face a pressing need to rearm amid fears the US may pull back from its security commitments, an EBRD report shows higher defence spending is already putting pressure on public finances.
Protest marks four-month anniversary of deadly canopy collapse at Novi Sad station, that has become a powerful symbol of public dissatisfaction.
The parliament of Republika Srpska adopted a set of lawsbanning the work of state-level judicial institutions on its territory and establishing local ones, in a move towards secession.
Students from across Serbia are making their way on foot and by bicycle to Niš, the country's third-largest city, ahead of a large protest rally scheduled for March 1.