Dad is identified as STEPHEN PLAYFORD.
http://www.abc.net.au/news/2015-09-07/man-being-questioned-over-six-year-old-girls-death-qld-police/6754464
Father expected to be charged over six-year-old daughter's death in Brisbane
Updated about 11 hours ago
Stephen Playford was taken into custody on Monday afternoon.
A father is expected to be charged after the death of his six-year-old daughter at their Brisbane home.
The body of the girl was found at 8:00am Monday by her mother in a bedroom she shared with her eight-year-old sister.
Three hours earlier, Stephen Playford had left his Kedron family home in his 4WD Mercedes.
The 52-year-old mining executive was found hours later on the Gold Coast hinterland and taken to hospital for care.
He was taken into custody and is expected to be charged late tonight.
Acting Detective Superintendent Geoff Sheldon said it was not clear how the child died.
He said there had been no history of domestic violence in the family.
As you can imagine, [the mother and the eight-year-old sister] are just beside themselves with grief, as anyone would be in the death of such a beautiful, young six-year-old girl.
Acting Detective Inspector Geoff Sheldon
"There's no immediate cause of death," he said.
"There's nothing here to indicate any welfare concerns.
"We don't even know the cause of death — it could be a horrible medical condition or it could be something else, or anywhere in between, that's why we're trying to get as much information as we can."
He said the family was in shock.
"As you can imagine, [the mother and the eight-year-old sister] are just beside themselves with grief, as anyone would be in the death of such a beautiful, young six-year-old girl," detective Sheldon said.
Police declared a crime scene, with forensics and pathologists called in to help determine how she died.
"There's no immediate cause of death. We're treating the whole death as very very serious as you would any death of such a child at such tender years," detective Sheldon said.
"There's no history of domestic violence or anything like that. They haven't come to the attention of police in any negative way in that regard.
No signs of trouble
Police door-knocked the local area earlier in the day.
Neighbour Katrina Marlow said there were no signs of trouble last night.
"When I came home at midnight — it was lovely, quiet, peaceful, like it is every night," she said.
"At about eight o'clock this morning I heard my neighbour say something happened and I heard police sirens and noise and everything.
"It will hit people, the people who know them better, very, very hard."
Another neighbour said there were no signs of a disturbance this morning.
"This is a really quiet street, nothing happens, didn't see anything — there were no incidents there whatsoever," she said.
Acting Detective Superintendent Sheldon urged anyone who could assist with further information to contact Crime Stoppers on 1800 333 000.