Navalny was under Russian security surveillance

Kremlin critic Alexei Navalny, who is being treated in a German hospital after a suspected poisoning, was monitored by Russian federal security agents during his last trip to Siberia, reports a Russian newspaper.

The officers of Russia's Federal Security Service (FSB) monitored Navalny's movements, the Moskovsky Komsomoles newspaper said, citing sources of Russian security agencies.

The survey included officers dressed as civilians and cameras in objects and roads, the newspapers wrote.