The BBC has been shown copies of the death threats and a recording of the phone call.

In it, an identified man disguises his threat as a cold call from a company selling graveyard plots and coffins. He chillingly insists that: "Now is the time you should be thinking about the end of your life."

The activist says the final straw came last week.

"I was walking past a police station in Krasnodar and a police officer [recognised me]. He said 'Get ready. It's coming.' He meant the state's reaction [to]…interviews I was giving. They already had enough to open a serious criminal case against me." เว็บคาสิโน เชื่อถือได้