A suicide note has been located after the bodies of a young girl and her father were pulled from the Parramatta River on Saturday.
The six-year-old may have been deliberately thrown in the water from a hire boat by the man in a horrific act of domestic violence, police believe.
"We have uncovered a suicide note and some other evidence drawing us to this conclusion," NSW Police Marine Area Commander, Superintendent Joe McNulty, told 2GB on Monday.
Officers were called to Hen and Chicken Bay at Concord, in Sydney's inner west, at about 11.45am following reports of man's body floating in the river.
A boat owned by a member of the public was used by police to retrieve the 47-year-old, but he was unable to be revived.
