Tunisian police have arrested Islamist activists after they clashed with a group of lawyers outside the capital's main courthouse, as tensions rise over the country's post-revolutionary future.

They were demanding the release of their comrades, arrested during protests over a film some said offended Islam.

Six members of the Salafist movement were arrested after they stormed a cinema and broke its glass doors in a bid to stop the screening of
the film: "Neither Allah, nor Master" on secularism in Tunisia.

Al Jazeera's Rhodri Davies has more.