By Tatyana Kekic in Novi Sad Serbia is in the throes of a political crisis, sparked by a deadly infrastructure collapse in Novi Sad late last year, with ongoing student-led protests putting immense pressure on the government.

Tens of thousands of people blockaded three bridges on the Danube River in Serbia's second city of Novi Sad on Saturday in the latest anti-government protest over a railway station disaster that killed 15 people in November.

Protesters have repeatedly faced attacks, including on students, with drivers ramming cars into demonstrations on two previous occasions. Two people were seriously injured. Along the way to Novi Sad on Friday, the students were greeted by cheering citizens who honked their car horns or came out of their homes to offer food and drinks.