Police in Tunisia say they have arrested more than 600 people as a fourth night of violent protests saw protesters return to the streets.
Yesterday, crowds of mainly young demonstrators again gathered in the centre of the capital, Tunis, throwing stones and petrol bombs at police.
Security forces responded with tear gas and water cannon.
Tunisia faces severe economic problems and a third of its young people are unemployed.
The latest unrest comes almost exactly 10 years since the Tunisian revolution ushered in democracy and triggered the Arab Spring revolts across the region.
Outside Tunis, clashes were reported on Monday in the cities of Kasserine, Gafsa, Sousse and Monastir.