Western Envoys Pay Tribute to Jailed Kremlin Critic Navalny After Contested Death in Custody
• US and UK ambassadors laid flowers at memorial for Russian opposition leader Alexei Navalny, who died in prison • Navalny allies believe he was murdered on orders of President Putin; prison says he died of "sudden death syndrome" • About 400 Russians detained at gatherings honoring Navalny, who was vocal critic of Putin • Location of Navalny's body unclear; allies say authorities hiding it and have not released it to his family • Western countries demanding transparent investigation into Navalny's death, which comes amid international criticism of Putin