The Senegalese opposition leader, Ousmane Sonko, says he has resumed a hunger strike.
He was jailed several months ago on various charges including criminal association with a terrorist enterprise and undermining state security.
He says the charges were instigated by President Macky Sall and aimed at preventing him from running in presidential elections next year.
In July, after years of uncertainty over his political future, Mr Sall said he would not be seeking a third term in office in 2024.
Sonko said his renewed action was a demonstration of solidarity with other activists who had been unjustly arrested for expressing their political opinions.
Since 2021 there have been many protests in Senegal in support of Sonko, which have left dozens dead.
