Police in the city of Sousse seized Jebali's phone and his wife's phone and took him to an unknown location, according to a statement by his family.
President Saied is seeking to overhaul the constitution to give the presidency more powers, against the backdrop of a tanking economy and fears of a public finance crisis.
President Kais Saied fires judges, accusing them of corruption and protecting terrorists, as he moves to take control of the North African country's judiciary.
President Kais Saied has denounced attempts by Tunisia's opposition party to form a "national salvation" government overseas, calling the plan a "coup attempt".
Over 2,000 protesters gathered in central Tunis, following President Saied's decree establishing a new judicial watchdog that lets him dismiss judges or block their promotion.
Friday's protest was against a ban on all indoor or outdoor gatherings the government of President Kais Saied announced this week to stop a Covid-19 wave.
One member of the Ennahda party has died and several others have been injured after a fire erupted at the party's headquarters.
The future of Ennahda will depend not on its ideology, but its organisational transformation, political choices, and the political system’s new arrangements.
Hundreds of protestors gathered at the Habib Bourguiba Avenue, in the heart of the capital Tunis, chanting "The people want the fall of the coup".
"The wrong political choices of the leadership of the Ennahda movement led to its isolation and failure," 113 senior officials from the party said in a joint statement.
President Kais Saied’s intervention raised several questions regarding the future of democracy, some of which derive from his plans and others from the country’s institutional and structural circumstances.
Although the US and EU may pay lip service to democratic processes and institutions, they will ultimately prioritise their security interests.
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