Warning - this story may be distressing to some readers
Police believe the deaths of Henry Shepherdson, 38, and his nine-month-old daughter Kobi on Wednesday were a murder-suicide, with witnesses reporting they saw the man jump from the tourist attraction in Williamstown.
Onlookers tried to help baby Kobi following the fall but paramedics who arrived about 4.30pm found her unresponsive and were unable to revive her.
Kobi Shepherdson died in a suspected murder-suicide.(Nine)
The man was found dead.
A police statement said early investigations showed a history of domestic violence between Mr Shepherdson and the mother of Kobi.
A case against Shepherdson for alleged assault, and for allegedly threatening his partner and baby last year was dropped.
Father and baby daughter found dead at Aussie tourist spot nzherald.co.nz - get the latest breaking news, showbiz & celebrity photos, sport news & rumours, viral videos and top stories from nzherald.co.nz Daily Mail and Mail on Sunday newspapers.
Her name was Kobi Shepherdson She died on Wednesday mamamia.com.au - get the latest breaking news, showbiz & celebrity photos, sport news & rumours, viral videos and top stories from mamamia.com.au Daily Mail and Mail on Sunday newspapers.
Henry Shepherdson jumped from the Whispering Wall with his daughter Kobi
His extensive history of violence has been revealed in the wake of his death
Shepherdson had earlier threatened to kill his baby daughter and his partner
Shepherdson was banned from contacting or being within 200m of his family
But South Australia s Attorney-General denied Kobi was failed by the system
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Salta al vacío con su hija de nueve meses en un portabebé larazon.es - get the latest breaking news, showbiz & celebrity photos, sport news & rumours, viral videos and top stories from larazon.es Daily Mail and Mail on Sunday newspapers.