A former Siberian police officer who is serving a life sentence for the killings of more than 80 women was handed an additional 10 years in prison on November 22 for the killing of three more women in 1997, 1998, and 2003. Dubbed the Angarsk Maniac by Russian media, Mikhail Popkov is the most prolific known serial killer in Russian and Soviet history. Andrei Chikatilo was convicted in 1992 and executed in 1994 for raping and killing as many as 52 people. "Chessboard Killer" Aleksandr Pichushkin was sentenced to life in prison in 2007 for 48 murders. To read the original story by RFE/RL's Siberia.Realities, click here.