Thousands of people around Russia have joined unauthorised rallies to protest against the detention of jailed opposition leader Alexei Navalny.
They are calling for Navalny, who has been on hunger strike for weeks, to receive proper medical care. More than 1,000 people were reportedly arrested.
Navalny, 44, was jailed in February and is demanding medical attention for acute back pain and leg numbness.
The largest protest was in Moscow, but others took place in major cities.
These included St Petersburg, Vladivostok in the Far East, a number of cities in Siberia, and the central city of Vladimir where Navalny is being held.