Photo taken on August 27, 2013. Alexei Navalny listens to a question whilst speaking to the media in Moscow. Credit: AP Photo/Alexander Zemlianichenko, File

At a Glance...

  • Alexei Navalny, 47, crusaded against official corruption and staged massive anti-Kremlin protests.
  • He died in prison on Friday after attempts to resuscitate him failed, Russia’s prison agency said.
  • Kremlin spokesman Dmitry Peskov says Putin was informed of Navalny’s death and the prison service was looking into the death.
  • Navalny was serving a 19-year sentence on charges of extremism in an Artic prison.