© Joel Goodman - 07973 332324 - all rights reserved . 13/12/2019 . Manchester , UK . GV of Montana House on Princess Street in Manchester City Centre , where Sinaga was living and committed many of his offences . Reynhard Sinaga has been convicted of over a hundred serious sexual assaults , including the rape of dozens of young men whom he lured to his flat from outside nightclubs in Manchester City Centre , making him one of the most prolific sex offenders ever to have been tried and convicted . Photo credit : Joel Goodman