Police are investigating all possible leads after a father and his young daughter died in a busy city waterway.
The pair had taken a rented boat out on Parramatta River near Concord in Sydney's inner west on Saturday when the body of the man in his 40s was found floating in the water just before midday.
His seven-year-old daughter had also gone missing overboard before specialist police divers recovered her body hours later.
Burwood police superintendent Christine McDonald says investigations into the cause of the incident are ongoing.
The man and girl have yet to be formally identified but police said the family was from Westmead, in Sydney's west.
Supt McDonald said whether the incident was deliberate, including if family violence was involved, or an accident was a "definite" line of inquiry.
