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.
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A man and woman have been arrested on suspicion of murder after a badly burned body was found in a garden in Southfields, south-west London.
Kim Jong-un has called Donald Trump "deranged" and says he will "pay dearly" for his threats, according to North Korea's state news agency.
Theresa May will tell European counterparts their shared political legacies depend on agreeing a good Brexit deal.