A close aide to Alexei Navalny on Thursday called on supporters of the jailed Kremlin critic to join anti-government demonstrations later this year, after police detained 10,000 people at recent nationwide rallies.

Leonid Volkov said during a live stream on YouTube that Navalny's aides will try to hold more demonstrations, "but not every week," promising instead: "We will properly organise them and definitely hold another big one in spring and summer."