President Joe Biden said Friday he was both "not surprised" and "outraged" by reports of the death of Alexei Navalny, the longtime Russian opposition politician and critic of Vladimir Putin. Russia's Federal Penitentiary Service announced Navalny died in prison. The service claimed Navalny, 47, lost consciousness after a walk but gave no official cause of death. "Russian authorities are going to tell their own story," Biden said in remarks delivered from the Roosevelt Room. "Make no mistake: Putin is responsible for Navalny's death."