Tunisian police have used tear gas to disperse a demonstration of ultraconservative Islamists protesting against the government in the capital.

Hundreds of Salafists took to the streets after Friday prayers condemning comments by the president that they were an insignificant minority.

The protesters carried signs calling for Islamic law and chanted God is the greatest.

Tunisia was ruled for 23 years by Zine El Abidine Ben Ali who espoused a secular ideology and imposed strict limits on political Islam. Since his ouster in January 2011, there has been a flourishing of Islamic groups.

A moderate Islamist political party won elections in October.