This article is more than 7 years old

This article is more than 7 years old

Thousands of protesters took to the streets of Tunisia over the murder of a leftwing secular opposition leader in a shooting outside his home in Tunis.

Mohammed Brahmi, 58, was killed on Thursday morning by two gunmen as he sat in his car outside his home.

He was hit 11 times before his assailants escaped on a moped. The killing was reportedly witnessed by members of his family, including his wife and handicapped daughter.

"He was shot in front of his house when he was with his disabled daughter," Mohamed Nabki, a member of Brahmi's secular party, told Reuters. "The killers fled on a motorbike."

"This criminal gang has killed the free voice of Brahmi," his widow Mbarka Brahmi said in a statement to the media.By Thursday evening the Echab newspaper – allied with Tunisia's UGTT union – was carrying a full page picture of Brahmi's face describing him as a 'martyr.

Brahmi, a member of Tunisia's constituent assembly, had been a loud critic of the ruling Islamist Ennahda party, which came to power in elections after the overthrow of the country's autocratic leader Zine al-Abidine Ben Ali.

The shooting is the second assassination in six months of an opposition figure after February's murder of Chokri Belaïd, also a Popular Front coalition member.

Ennahda condemned the murder and Rachid Ghannouchi, leader of the party, said it was aimed at "halting Tunisia's democratic process and killing the only successful model in the region".

The killing comes amid emerging tensions in North Africa after the Egyptian army's overthrow of the Muslim Brotherhood-led government of Mohamed Morsi on 3 July, an event that has energised secular opposition parties in Tunisia.

The country is led by the moderate Islamist Ennahda, which dominated elections in October 2011 and rules in coalition with two secular parties.

Tunisia's tamarod or "rebellion" organisation – modelled on the grouping that helped lead to the overthrow of Morsi – repeated its call for Tunisia's parliament to be dissolved. It called for mass protests – inspired by Egypt's – and stated "the streets are the solution".

Following the killing of Brahmi, largely secular supporters demonstrated outside the ministry of the interior in Tunis and in the central thoroughfare of Avenue Habib Bourguiba. Protests also erupted in Sidi Bouzid where the headquarters of the Ennahda party were attacked and set on fire.

Others gathered outside the hospital where Brahmi's body was taken, among them his daughter Belkaeis, and – in scenes reminiscent of the Tunisian revolution two and a half years ago – chanted "down with the rule of the Islamists".

Police fired teargas to disperse protesters who stormed a local government office in the Mediterranean port of Sfax.

All flights to and from Tunisia on Friday will be cancelled after the country's biggest labour organisation, UGTT, called for a general strike to protest Brahmi's killing. Its secretary-general, Hussein Abbasi, earlier predicted that the assassination would lead the country into a "bloodbath".

The latest killing in Tunisia – birthplace of the Arab Spring – comes in a country that until very recently was regarded as being a success story among the wave of insurrections that began in 2011 after a fruit seller set himself on fire in Sidi Bouzid.

The killing has striking similarities to the murder of Belaïd whose death provoked a political crisis that nearly derailed Tunisia's political transition.

Opposition supporters blamed Ennahda for not doing enough to bring to justice Belaïd's killers.