Hundreds of Serbian university students on Thursday started an 80-kilometer (50-mile) march toward the northern city of Novi Sad, the latest endeavor in their widening protest movement over a deadly overhang collapse in November that killed 15 people.

Thousands of students blocked traffic at Autokomanda, one of Belgrade's busiest intersections, for 24 hours to protest the Serbian government's failure to prosecute those responsible for the collapse of a concrete canopy at the main railway station in the northern city of Novi Sad in November.

Serbia's Prime Minister Milos Vucevic announced Tuesday his resignation amid growing student protests against the government because of the deadly accident at the Novi Sad railway station that left 15 dead last November.