Thousands of protesters gathered in Sidi Bouzid, cradle of the Arab Spring uprisings, after a Chokri Belaid, a prominent secular opponent of Tunisia's moderate Islamist-led government, was shot dead.
"More than four thousand are protesting now, burning tyres and throwing stones at the police," Mehdi Horchani, a Sidi Bouzid resident, told Reuters. "There is great anger".
More top news
Singer paid emotional tribute to victims of the Manchester Arena attack, saying 'it's awful... and whatever you can do to help, you should'.
The broadcaster, who also writes for MailOnline, 'agreed' with the radio station that she would no longer work there.
The US grunge star was found hanged and leaves behind his wife and three children.