Belarusian opposition leader Sviatlana Tsikhanouskaya said that Russian opposition leader Alexei Navalny's "death is further proof that for dictators, human life has no value."
Navalny, who was serving a 19-year sentence on charges of extremism , had only recently been moved to a grizzly special regime penal colony above the Arctic Circle.
Who was Alexei Navalny? Life of the Russian opposition leader apnews.com - get the latest breaking news, showbiz & celebrity photos, sport news & rumours, viral videos and top stories from apnews.com Daily Mail and Mail on Sunday newspapers.
Alexey Navalny’s wife, Yulia Navalnaya, has said Russian President Vladimir Putin and his government will be "brought to justice" for the death of her husband.