Protests began on Saturday, a day after Abdelwaheb Hablani, 25, set himself on fire and died in hospital in protest at poverty and poor living conditions, echoing the 2010 self immolation of Mohammed Bouazizi, whose death triggered the Arab Spring.
Hablani had occasional work as a casual laborer in Jelma, located near Bouazizi's home city of Sidi Bouzid in Tunisia's deeply impoverished interior. He was buried on Saturday.
Witnesses told Reuters security forces fired tear gas and were chasing youths protesting in the streets of Jelma.
Protesters blocked roads and burned tires.
"The situation is difficult here. Police are flexing their muscles and they fired tear gas everywhere," Bilel Harzali, a local resident, told Reuters.
"The scene brings to mind the days of the revolution. ...People are angry because the lack of development and the strong security response," he added.
Mass protests that followed Bouazizi's funeral in December 2010 toppled the veteran autocrat Zine El Abidine Ben Ali, who died in exile in Saudi Arabia in September, and introduced democracy in the North Africa country.
Since Bouazizi's death in December 2010, numerous young men have followed his example by setting themselves alight in the face of Tunisia's chronic economic difficulties.
The birthplace of the “Arab Spring”, Tunisia is the only country to achieve a peaceful transition to democracy following the 2011 popular revolts that swept autocrats from power across North Africa and the Middle East.
But since 2011, Tunisia’s economy has been in crisis and nine cabinets have failed to resolve economic problems, including high inflation, unemployment and corruption.