Detainees are recounting their miserable experiences as Moscow jails were overwhelmed following mass arrests from protests in support of opposition leader Alexei Navalny this week

Alexei Navalny, who is the most prominent critic of President Vladimir Putin, had earlier denounced the proceedings as a vain attempt by the Kremlin to scare millions of Russians into submission.

Police also searched the apartment of Navalny’s spokeswoman, who was arrested last week and jailed, and an investigator for Alexei Navalny’s group.

Allies of jailed Russian opposition leader Alexei Navalny are calling for new protests following a wave of demonstrations across the country in a defiant challenge to President Vladimir Putin.

The treaty is the last remaining agreement constraining U.S. and Russian nuclear weapons, and the proposed extension is being communicated to Russia, an official says.