Opposition Serbian MPs blocked Novi Sad's prosecutor's office and courts Tuesday demanding the release of politicians and activists held over protests at the collapse of the city railway station in which 15 people died.

Residents in northern Serbia stopped traffic and stood in silence Friday to commemorate the 14 victims of a railway roof collapse two weeks ago and demand accountability for the tragedy. Dozens of protesters held a large black banner and blocked crossroads outside the central railway station in the city of Novi Sad,

Skirmishes erupted for a second day Wednesday 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.

Serbian opposition protesters have blocked a court house over a deadly roof collapse at a railway station in the country's north earlier this month, setting off a standoff with riot police. It's a sign of persistent tensions over the crash that killed 15 people and injured two.