Protests in Senegal: what you need to know about Ousmane Sonko and his arrest

There has been serious unrest across Senegal since Wednesday, March 3, following the arrest and detention of opposition leader Ousmane Sonko.

But who is Ousmane Sonko, why was he arrested and why are some Senegalese protesting to demand his release?

Explains Clarisse Fortune of BBC Africa.

Produced by Leone Ouedraogo and Anne Okumu.