A Russian serial killer dubbed the "werewolf" may have killed as many as 82 women in a historic reign of terror, authorities say.
Mikhail Popkov was first arrested in 2012 and sentenced to life in prison for the murder of 22 women. He later confessed to 20 more slayings, and the newest charges against him include 60 counts of murder.
Popkov, from the eastern Siberian city of Angarsk, might be Russia's biggest serial killer in the last 100 years. Cops have for years been investigating murders in the Irkutsk region where dozens of women were raped and killed.