Hackett's dad 'extremely worried' (00:37)
Grant Hackett's father says the former Olympic champion has gone missing and is "very mentally disturbed". Vision: Channel Seven 16/02/17
Up next... Grant Hackett missing
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Skip to navigation Skip to contentGrant Hackett's father says the former Olympic champion has gone missing and is "very mentally disturbed". Vision: Channel Seven 16/02/17
Up next... Grant Hackett missing
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