Fresh scuffles broke out on Friday as hundreds of Tunisians took to the streets of the capital and coastal city of Sfax, waving yellow cards.
The demonstrators were demanding the government reverse austerity measures recently put into effect.
Tunisian authorities said the number of people detained in the wave of violent protests had risen to nearly 800.
Friday’s demonstrations came ahead of the seventh anniversary of Ben Ali’s ouster on 14th January, 2011.
The protesters said they want the Finance act repealed.
They also expressed their anger at some of the in-laws of former president Ben-Ali who have been mentioned in a number of graft cases.
They demand that their needs are met and that a dialogue process begins.