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This is the chilling moment 'Russia's Jack the Ripper' showed detectives how he allegedly murdered one of his victims.
Evgeny Chuplinsky, 52, will stand trial next year for killing 19 women - all aged between 18 and 31.
Using a mannequin, the handcuffed former policeman showed how he strangled and butchered one young sex worker before dumping her body in a field.
He later retracted his confession to the killings and is it now expected to plead not guilty to the crimes.