Protesters in Serbia stood in silence for 15 minutes on Friday for the victims of a roof collapse four weeks ago in a northern city, seeking to keep up pressure on the populist authorities to punish those responsible for the tragedy.

A Serbian higher court on Wednesday released former minister Goran Vesic, who had been detained last Thursday in connection with the collapse of a railway station roof that killed 15 people and sparked a wave of protests.

Serbian protesters clash with governmentsupporters with anger high over a deadly disaster:::: Belgrade, Serbia:: Fifteen people died when a canopy collapsed at a train station earlier in November:: The opposition has protested blamingthe collapse on government corruptionThe protest,

The deadly collapse of a concrete roof at a rail station in Serbia has raised tensions across the Balkan county.