Updated

Several thousand protesters have swarmed on the governmental palace to demand the ouster of the provisional government in power since the ouster of country's longtime strongman.

Police briefly fired warning shots to disperse the crowd that defied government warnings not to challenge emergency measures enacted as the 23-year regime of President Zine El Abidine Ben Ali came down last month.

Some demonstrators said the march Sunday was aimed to show discontent over police's harsh measures against protesters last month in Tunis.

Many are angry that Prime Minister Mohamed Ghannouchi — a longtime ally of Ben Ali — is still in his post, and fear the Tunisian revolution that has sparked upheaval across the Arab world has been co-opted by the old guard.