Ariel Castro was being held in protective custody in isolation from other inmates at the Correctional Reception Center in Orient, Ohio when he was found dead last night.
According to media reports in the US, he was being checked on every 30 minutes.
More top news
Luxury car maker Lexus has made a full-size driveable 'Origami car' out of cardboard to celebrate the craftsmanship of their workers.
Who will get hired and who will get fired by Lord Sugar in this year's Apprentice?
Instagram is celebrating its fifth birthday just weeks after smashing the 400-million-user mark.