The deadly collapse of a concrete roof at a rail station in Serbia has raised tensions across the Balkan county, fueling widespread anger toward the government and protests after the failure claimed 15 lives in the northern city of Novi Sad.

Prosecutors in the Serbian city of Novi Sad have arrested 11 people in connection with the collapse of a railway station roof this month that killed 15 people and sparked a wave of protests.

Skirmishes have erupted for a second day in the northern Serbian city of Novi Sad between police and opposition protesters demanding arrests over a deadly roof collapse at the city’s railway station earlier this month.