The offices of Serbia’s ruling party have been set on fire during a fifth night of unrest between anti-government protesters and riot police.

Serbia's president on Sunday vowed a "strong" response to anti-government protests, after nearly a week of violent clashes involving his supporters, police and demonstrators across the country.

Serbia's police say they have detained scores of demonstrators who took part in anti-government protests throughout the country this week.

Angry protesters clashed with police in a town in western Serbia and in the capital Belgrade on Saturday as tensions soared further in the Balkan nation following days of violent demonstrations. Wearing scarves over their faces and chanting slogans against President Aleksandar Vucic,

The sometime actor and former Yugoslavian soccer player sold the eatery, which last year celebrated its 60th anniversary, to current owner Sonja Perencevic in 2009 before moving to Belgrade, Serbia.

BELGRADE: Serbia's President Aleksandar Vucic on Sunday announced tough measures against anti-government protesters following days of riots in the streets throughout Serbia that have challenged his increasingly autocratic rule in the Balkan country.

Fresh clashes erupted late Saturday between protesters and riot police in Serbia's capital Belgrade and other cities, on the fifth consecutive night of unrest.