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
Sadiq Khan has weighed in on the debate over the burkini being banned on some French beaches saying women should not be told what to wear.
The USA women's football team goalkeeper Hope Solo has received a six-month suspension for comments made.
The mobile messaging service Whatsapp is going to start sharing users' phone numbers with Facebook, to ensure "better friend suggestions".