Russian activist and Putin critic Alexei Navalny dies in prison

Opposition leader, 47, was being held in jail about 40 miles north of Arctic Circle

The Russian opposition leader Alexei Navalny has died in jail, the country’s prison service has said, in what is likely to be seen as a political assassination attributable to Vladimir Putin.

Navalny, 47, one of Putin’s most visible and persistent critics, was being held in a jail about 40 miles north of the Arctic Circle where he had been sentenced to 19 years under a “special regime”.