New clashes broke out in the Tunisian capital following a night of violence as the regime of President Zine El Abidine Ben Ali has struggled to contain weeks of protests.
Reports say at least one person was killed and other wounded when police opened fire on demonstrators in Tunis.
University professors demonstrated separately, shouting slogans against the "dictatorship."
An international rights group earlier said eight protesters had been killed in overnight clashes with security forces around Tunis, despite a nighttime curfew.
The International Federation for Human Rights (FIDH) also said a crackdown on violence that started with protests against unemployment in mid-December has left 66 people dead.
compiled from agency reports