He's been on hunger strike since shortly after his arrest last month - lawyers for Senegalese opposition leader, Ousmane Sonko, say he's being treated in hospital. A declared candidate for the next year's presidential election, the 49-year-old has been engaged in a bitter power struggle with authorities since 2021, when he was placed under investigation for alleged corruption. In June, he was sentenced to two months in prison, a move that sparked deadly protests. FRANCE 24's correspondent in Dakar, Sam Bradpiece, gives us the latest.