Health authorities and the coroner's office are investigating how a five-year-old boy died just hours after being discharged from a Sydney hospital.
The boy, from Wahroonga in the city's north, was taken by his parents to Hornsby Ku-ring-gai Hospital with stomach pain in the early hours of last Thursday, AAP understands.
The previous night he had struggled to eat dinner and sleep through the night, prompting them to seek medical help.
He was discharged about 7am and his parents were told to monitor him but by 2pm his condition had deteriorated and he was rushed to Sydney Adventist Hospital.
Staff worked to save him but at 4.15pm, he was declared dead.
A crime scene was established but his death was not found to be suspicious, a NSW Police spokeswoman told AAP.
A coroner will investigate the death, while the North Sydney Local Health District will carry out a pediatric review into the incident.
"Our deepest sympathies are extended to the family and friends of this little boy for their tragic loss," NSLHD said in a statement on Wednesday.
Opposition health spokesman Walt Secord has called for an independent investigation into the resourcing of Hornsby Hospital.
"Hornsby Hospital was under enormous pressure and has more than 40,000 patients go through its emergency department every year," he said in a statement on Tuesday.
"Hornsby Hospital lurches from crisis to crisis. Doctors, nurses and allied health workers say they are working with one arm tied behind their backs due to the lack of the much-needed upgrade."
