More than 600 people have been arrested and troops have been deployed after a third consecutive night of riots in several Tunisian cities, officials said Monday.

Tunisia marked 10 years Thursday since its street revolution sent autocratic ruler Zine El Abidine Ben Ali fleeing into exile, but few are celebrating amid a lockdown as Covid-19 cases spiral.

Tunisia is struggling to protect North Africa's Jewish heritage, threatened by vandalism, looting and the smuggling of valuable artefacts bearing witness to the long history of the region's Jews.

Tunisian authorities said Monday they had arrested seven people over a knife attack the previous day that killed a National Guard officer and wounded another.

Tunisia's prime minister-designate on Tuesday unveiled the country's second government in six months, which must now seek approval from lawmakers incensed by how the administration was formed. 

Tunisian youths clashed with police overnight in a town in Tunisia's deprived south, where a protest movement is demanding jobs and services, the interior ministry said Wednesday.

Tunisia's parliament on Wednesday rejected a motion calling on France to apologise for crimes committed during and after colonial rule, following 15 hours of debate that ran into the night.

Tunisia's new government won a confidence vote in parliament on Thursday, after more than four months of political wrangling since elections.

Tunisian President Kais Saied's first major foray into international affairs appears to have backfired, with his diplomatic strategy called into question over the dismissal of Tunis' UN envoy.

At least 26 people were killed when their bus careered into a ravine in the northwest of Tunisia, officials said in a new toll.