Russian opposition figure Navalny killed by toxin found in poison dart frogs, Europeans say

By Catherine Nicholls, CNN (CNN) — Russian opposition figure and outspoken Kremlin critic Alexey Navalny, who died two years ago, was killed while in prison by a lethal toxin found in poison dart frogs in South America, five European countries have said in a statement Saturday. Analyses of samples taken from Navalny’s body have “conclusively