Brisbane Police are investigating the death of a little girl, after she suffered cardiac arrest at a home on Brisbane's northside.
The young girl died in hospital overnight.
Paramedics administered CPR to the child for 30 minutes and were able to revive her before transporting her to Lady Cilento Children's Hospital.
Police are investigating and said the child's parents are assisting with their inquiries.
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A neighbour told Nine News she had no idea something was wrong until she saw the ambulance and police cars.
'Everything was very quiet. I was quite incredible because there was no noise. All of a sudden, all these ambulances were everywhere, ' she said.
"There is never any sound comes from there, nothing that gave any indication something was wrong".
Members from the Child Protection and Investigation Unit will continue investigations today.