Tunisian police used teargas on Monday to try to disperse protesters who camped out all evening at the prime minister's office as part of a campaign to remove a government linked to ousted president Zine al-Abidine Ben Ali.
Reuters witnesses saw the protesters, mostly from rural areas who came to the capital on Sunday, surge into the compound area by the prime minister's office and break several windows of the Finance Ministry building.
For days, protesters have gathered at the premier's office, limited in numbers but tolerated by police anxious for their own futures after Ben Ali. The demonstrators enjoy wider support among a population unused to free political expression.
Since Ben Ali fled to Saudi Arabia earlier this month, police had only used teargas once against protesters, who had gathered on the central Habib Bourguiba Boulevard.
Prime Minister Mohamed Ghannouchi and other former loyalists of the feared ruling party have faced mounting pressure to step down since they took the reins of an interim coalition that is charged with preparing for new elections and democratisation.
On Sunday, hundreds of people who had been driven to the capital in a "freedom caravan" surrounded Ghannouchi's building in central Tunis.
Many were from Sidi Bouzid, the bleak city in central Tunisia where the "Jasmine Revolution" over poverty, corruption and political repression was sparked a month ago by the suicide of despairing young man.
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Tunisian marchers head to PM's office - UPDATEDLast Mod: 24 Ocak 2011, 16:25