The parents of Chloe Waddell reportedly tried to revive her after finding the swimmer unconscious at their home in Timperley.
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Two people have been pulled from the sea and are being treated by paramedics on an East Anglian beach.
Jeremy Corbyn has denied allegations of bullying saying "intimidation is not allowed" in the Labour party.
A gunman who killed nine people and at a Munich shopping centre was German-born and had no links with Islamic State, authorities say.