Residents in several cities and towns across Serbia blocked traffic and stood in silence for 15 minutes on Friday to commemorate the 15 victims of a roof collapse in the country’s north three weeks ago.

Eleven people have been arrested in Serbia in connection with a roof collapse earlier this month at a train station in the northern city of Novi Sad that killed 15 people and severely injured two others,

Deadly incident occurred after Novi Sad station was renovated, protesters blaming sloppy work led by corrupt officials.