Former South African President Nelson Mandela is back in hospital for "routine tests", the South African government has reported.
They added that Mr Mandela was admitted to hospital for a medical check up, and that there was no reason for alarm.
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Joshua beat the older, more experienced boxer in front of 90,000 fans in Wembley Stadium.
Dry for most of the night. Rain in the southwest by dawn.
Host Paddy McGuinness tweeted a tribute to contestant Charlie Watkins whose date was featured in Saturday's episode.