The body of a 41-year-old woman was found in bushes near her home in the city on Sunday, local police said.
Relatives and friends later named the victim as Yelena Grigoryeva, Russian news website Fontanka reports.
Ms Grigoryeva, who had reportedly received death threats, regularly campaigned for human rights in Russia.
In a post on Facebook on Monday, activist Dinar Idrisov said his friend Ms Grigoryeva had been “brutally killed near her home”.
“She had recently been the victim of violence and death threats,” he wrote, adding that she had filed several complaints with the police.
Continue reading: https://www.bbc.com/news/world-europe-49081626 (source)