The organization founded by Aleksei A. Navalny, the Kremlin’s most prominent political opponent, presented what it called new information to support its claim that he was poisoned.

Lab analysis of Alexei Navalny’s smuggled biological samples in two countries found he was killed by poisoning while in an Arctic jail.

Exámenes médicos realizados en varios laboratorios prueban que el opositor ruso Alexéi Navalni fue envenenado en prisión, según su viuda.

The organization founded by Aleksei A. Navalny, the Kremlin’s most prominent political opponent, presented what it called new information to support its claim that he was poisoned.

Russian opposition leader Alexei Navalny, who died in a Russian prison last year, was poisoned, said his widow, Yulia Navalnaya, in a video on Wednesday.