Tunisia’s premier Ali Laarayedh yesterday vowed tough action against Ansar al-Shariah after bloody clashes between police and members of the radical Salafist group, hinting at a shift in government policy.

The interior ministry also announced the dismantling of a “terrorist cell” and said it detained a suspect who planed attacks on police and army forces.

Tunisia has been rocked by waves of violence blamed on militant Islamists since its January 2011 revolution, and Laarayedh reacted angrily to the latest unrest, which erupted after the authorities banned Ansar al-Shariah’s annual congress.

Laarayedh said around 200 Salafists were arrested and vowed firm action against the group considered close to Al Qaeda that he linked for the first time to “terrorism”, prompting analysts to see a possible shift in government policy.

“Those proven to have nothing against them will be released, but those found to have been involved in violating the law will be prosecuted,” he told AFP during a visit to Doha.

“Ansar al-Shariah is an illegal organisation which defies and provokes state authority,” Laarayedh told Tunisian state television.

“It has ties to and is involved in terrorism,” added the former interior minister and stalwart of the ruling Ennahda party.

His moderate Islamist party has been sharply criticised for failing to prevent a surge in attacks by hardline Islamists since the mass uprising that toppled Zine al-Abidine Ben Ali, and of being too lenient towards the Salafists.

But faced with the threat of two armed jihadist groups hiding near the Algerian border, it has hardened its stance, banning the Salafists’ planned congress on Sunday in the holy city of Kairouan after their leader threatened “war” against the government.

Defying the ban, the Salafists gathered instead in Ettadhamen, a poor Tunis suburb, where clashes erupted as the police moved in, leaving at least one protester dead and 15 police hurt.

The neighbourhood was calm yesterday, but Ansar al-Shariah and a police source said a second person had also been killed in the violence.

Interior ministry spokesman Mohamed Ali Araoui, meanwhile, told reporters that on May 16 a “terrorist cell was dismantled” in the Kairouan region and “a 23-year-old who planned to attack the police and army had been arrested.”

Tunisia’s secular opposition, normally outspoken critics of Ennahda, said it “welcomes” the government’s firmness towards the Salafists.

The Republican Party number two Issam Chebbi praised the interior ministry’s decision “to impose respect for the law and for the state”, and called for a “national strategy to confront fundamentalism and terrorism”.

Analysts said the premier’s comments late on Sunday could signal a turning point.

“It is a change of language. Laarayedh has never before used this term for Ansar... reserving the word terrorist for the groups” which are being hunted on the Algerian border, said Michael Ayari from the International Crisis Group think tank.

He said it remained to be seen whether Laarayedh’s words would translate into actions, pointing out that dozens of Salafists were arrested after an attack on the US embassy last year and most were freed several months later.

“The words count, but we still can’t say that the policy has changed, that they mark a point of no return, and that the Ansar al-Shariah activists will now be arrested for belonging to the movement.”