Navalny, 47, was a well-known figure in Russia and a vocal critic of Russian President Vladimir Putin.
World leaders reacted with dismay and suspicion to the news, while Navalny's allies say the anti-corruption campaigner was likely murdered on Putin's orders.
U.S. President Joe Biden said Friday that "Putin is responsible" for Navalny's death.
"Make no mistake: Putin is responsible for Navalny's death ... What has happened to Navalny is yet more proof of Putin's brutality."
Asked whether the Kremlin was interested in a proper probe into Navanly's death, Peskov replied, "Actions provided for by Russia's legislation are being taken."
Persons:
Alexei Navalny, Navalny, Vladimir Putin, Navalny's, Dmitry Peskov, Putin, Joe Biden, Peskov
Organizations:
NBC
Locations:
Russia