Menn på motorsykler skjøt og drepte opposisjonspolitikeren Mohamed Brahmi utenfor hans hjem i Tunis torsdag. Brahmi er den andre kjente sekulære politikeren som drepes.
Reaksjonene på attentatet var sterke. Det er varslet store demonstrasjoner fredag.
«He was shot in front of his house when he was with his disabled daughter,» Mohamed Nabki, a member of Brahmi’s secular, nationalist Popular Party, told Reuters. «The killers fled on a motorbike.»
The assassination of another secular politician, Chokri Belaid, on February 6 ignited the worst violence in Tunisia since the 2011 fall of autocratic President Zine al-Abidine Ben Ali.
«This criminal gang has killed the free voice of Brahmi,» his widow Mbarka Brahmi said, without specifying who she thought was behind the shooting.
Brahmi was a vocal critic of the ruling coalition led by the Islamist Ennahda party and a member of the Constituent Assembly charged with drafting a new constitution for the North African nation, which is split between Islamists and their opponents.
The chairman of the Constituent Assembly declared that Friday would be a day of mourning for Brahmi.
Thousands of people protested outside the Interior Ministry in the capital, Tunis, after the killing.
«Down with the rule of the Islamists,» they chanted, and demand the government resign.
Similar demonstrations erupted in the southern town of Sidi Bouzid, the cradle of the Tunisian revolution, where protesters set fire to two local Ennahda party offices, witnesses said.
«Thousands have taken to the streets. People have blocked roads and set tires alight,» said Mehdi Horchani, a resident of Sidi Bouzid. «People are very angry.»