Cameroonian opposition leader Anicet Ekane died in custody on Monday, his lawyer and family said, a development that could worsen political tensions in the country.
Ekane, 74, leader of the African Movement for New Independence and Democracy (MANIDEM) party, was arrested on October 24 following post-election demonstrations, in what his party described as a "kidnapping" by Cameroonian soldiers.
He was being held on charges of hostility against the state, incitement to revolt, and calling for rebellion, charges he denied.
His death in custody could heighten tensions in the Central African nation where security forces killed 48 civilians while responding to protests against the re-election of President Paul Biya, the world's oldest ruler at 92, who has led his country since 1982.
Ekane was barely able to speak during a visit just days before his death, said his lawyer Ngouana Ulrich Juvenal. His sister, Mariane Simon-Ekane, confirmed the death on Facebook.
Cameroon's Defense Ministry said in a statement on Monday that an investigation into the cause of death was underway, adding that Ekane had died at the National Gendarmerie Military Medical Center in Yaounde, where he had been receiving treatment for a chronic illness by military and personal doctors.