(ANSA) - BELGRADE, FEB 24 - New tensions erupted this morning in Novi Sad, northern Serbia, when local opposition politicians and supporters attempted to break into City Hall during a session to elect a new mayor. The protesters broke through the massive police cordon set up in front of the building, throwing paint, eggs, toilet paper rolls and other objects at the riot police while chanting slogans against local authorities, the Belgrade government and President Aleksandar Vucic. Meanwhile, student protests, marches and roadblocks continue. (ANSA).