At least 273 people were detained in at least 32 Russian cities at events on Friday and Saturday in memory of Alexei Navalny, Russian President Vladimir Putin's most formidable domestic opponent, who died on Friday, according to rights group OVD-Info.
It is the largest wave of arrests at political events in Russia since Sept. 2022, when more than 1,300 were arrested at demonstrations against a "partial mobilization" of reservists for the military campaign in Ukraine.
Navalny, a 47-year-old former lawyer, fell unconscious and died on Friday after a walk at the "Polar Wolf" Arctic penal colony where he was serving a three-decade sentence, authorities said.
Arrests across the country
OVD-Info, which reports on freedom of assembly in Russia, said more than 177 people in 21 cities across Russia had been detained at spontaneous rallies and vigils as of 1030 GMT on Saturday.
OVD-Info said that 99 people had been detained in St Petersburg and 11 in Moscow, the country's two largest cities, where Navalny's mostly educated and urban supporters had been concentrated.
Footage filmed by Reuters on Saturday in St Petersburg showed a gathering of dozens by a monument to the victims of repression. Protesters lay flowers and candles, while some sung hymns and other hugged each other, shedding tears.
"I felt very sorry for him and for our country," said an 83-year-old woman attending the vigil who declined to give her name. "I'm scared."
A Reuters reporter at the scene said some 30 people were arrested shortly after the singing finished.
OVD-Info also reported individual arrests in smaller cities across Russia, from the border city of Belgorod, where seven were killed in a Ukrainian missile strike on Thursday, to Vorkuta, an Arctic mining outpost once a center of the Stalin-era gulag labor camps.
Footage filmed by Reuters in Moscow showed law enforcement bundling people to the ground in the snow, close to a spot where mourners had left flowers and messages in support of the dead opposition leader.
"In each police department there may be more detainees than in the published lists," OVD-Info said. "We publish only the names of those people about whom we have reliable knowledge and whose names we can publish."
Reuters could not immediately verify the count. Police declined to comment.