He committed the unthinkable - then went to sickening lengths to cover his tracks. Architect student Viktoria Povesma, 20, visited Alexander Altapov, 38, and his girlfriend Ekaterina in their apartment after a night out with friends. Terrifyingly, she was unaware that he had been previously jailed for sexual assaults. Evil killer Altapov raped Viktoria twice before dismembering her body - all in front of his lover Ekaterina. Viktoria's remains were cruelly scattered across the Siberian city of