Dart frogs in captivity do not produce the toxin, and it is not found naturally in Russia, five European governments said.

Mourners in Moscow have marked two years since Russian opposition leder Alexei Navalny died in an Arctic prison, as a new ...

Close allies of the late opposition figure Alexei Navalny have expressed outrage over an investigative media outlet’s decision to publish his unredacted autopsy photos. Maria Pevchikh, head of the ...

Late Russian opposition leader Alexey Navalny's mom says a European assessment that he was poisoned in prison "confirms what ...

However, the hit squad was exposed when one of its employees was arrested in Colombia in February, according to the Insider.

The toxin, epibatidine, can be found in frogs in the wild in South America or manufactured in a lab.

Russian opposition leader Alexei Navalny died in prison in Russia after being poisoned with a deadly toxin found in the skin of Ecuadorian dart frogs, the UK and other allies have revealed.

Alexei Navalny, a thorn in the side of the Kremlin and Russia’s most prominent political dissident, died in prison after ...

There is no innocent explanation for the toxin being found in samples taken from Navalny's body, Foreign Office says.

Britain and its allies said only Russia would have the ‘means, motive and disregard’ to launch such an attack – as his widow calls for Putin to be held accountable ...

Two years after the death of Russian opposition leader Alexei Navalny, new claims about how he died are intensifying an ...

TALLINN, Estonia (AP) — Alexei Navalny’s team is used to working independently. The most potent foe of Russian President Vladimir Putin was frequently absent for long stretches after being arrested, ...