National Guard spokesman Housameddine Jebabli said Thursday that protests took place in six different towns including Kasserine, in west central Tunisia, where journalist Abderrazak Zorgui set himself ablaze this week.
Interior Ministry spokesman Sofiane Zaag said 14 people were arrested overnight, in addition to the 18 arrests announced Wednesday.
Protests started after Zorgui posted a video online before his self-immolation describing his desperation and calling for revolt. He expressed frustration at the country's high unemployment and the unfulfilled promises of Tunisia's 2011 Arab Spring revolution.
A similar self-immolation, by a street vendor lamenting unemployment, corruption and repression, led to nationwide protests fueled by social media that brought down Tunisia's long-time authoritarian president in 2011. That ushered in democracy for Tunisia and unleashed similar movements around the Arab world.
Tunisia's journalists union has called for a general strike on Jan. 14 to mark the eighth anniversary of the revolution, and to protest the "deplorable condition" of media workers in the country.
Meanwhile, local authorities in Kasserine said another individual who threatened to kill himself was arrested by police on Thursday.
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