The victims of Ariel Castro - Michelle Knight, Gina DeJesus and Amanda Berry - have been made aware of his suicide, but will not be commenting, according to a CNN editor.
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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.