A timeline of Russian opposition leader Alexey Navalny’s life, from law school to Siberian prison

Open this photo in gallery:

Alexey Navalny, Russia’s top opposition leader and President Vladimir Putin’s fiercest foe, died in prison on Friday, a statement from the Federal Penitentiary Service said.

Navalny, who was serving a 19-year sentence on charges of extremism, felt unwell after a walk and collapsed, it said. The politician’s team had no immediate confirmation of his death.

Navalny was moved in December from his former prison in central Russia to to a “special regime” penal colony – the highest security level of prisons in Russia – above the Arctic Circle.

In a span of a decade, he went from being the Kremlin’s biggest foe to Russia’s most prominent political prisoner.

Here’s a look at key events in Navalny’s life, political activism and the charges he has faced through the years:

Reports of Alexey Navalny’s death a reminder of ‘what a monster Putin is,’ Trudeau says