Witnesses have detailed the tragic moment a dad found his three-year-old son’s lifeless body in the back of his scorching hot car, after accidentally leaving him in there for about six hours.

Arikh Hasan was found dead in the back of a Toyota Corolla in Sydney’s southwest at about 3pm on Thursday, as temperatures climbed to 34 degrees.

The young boy’s father Newaz Hasan was reportedly dropping his eldest son off at Glenfield Public school that morning, when he decided to get petrol before taking his younger son to childcare.

However witnesses say the father forgot his sleeping child in the back of the car and continued straight home.

Hours later, Mr Hasan found Arikh’s body when picking up his oldest child from school.

Eyewitness Mujammel Hossain told the Daily Mail he saw Mr Hasan and his oldest child screaming and crying, before calling the ambulance on their behalf.

“He took the boy out of the car and took him inside the bottle shop. The father did CPR so many times but there was no response,” Mr Hossain said.

The witness said he could tell by the young boy’s condition he had already died, explaining he looked really hot with “no pulse”.

When NSW Ambulance officers arrived, the boy was unresponsive. He was pronounced dead at the scene.

The boy’s father was later seen at the scene breaking down in tears with blood running down his hand.

Previous reports suggested Mr Hasan’s injuries were from punching the window to rescue his son, however Mr Hossain said he opened the door to get to Arikh.

Rather it’s suggested Mr Hasan sustained hand injuries after punching the glass window in distress.

A crime scene was established and an investigation into the circumstances surrounding the incident is underway.

The boy’s father was taken to Campbelltown Police Station and questioned by police over the incident, but was released without charge, a police spokesman told NCA NewsWire.

Quoting people who they described as Bangladeshi migrant community sources, the Daily Mail claimed the father spent the day working in his home office before returning to his car in the afternoon.

Child safety advocates Kidsafe claim more than 5000 children are rescued from hot cars in Australia every year — the majority being babies and toddlers.

“Leaving children unattended in a car – even for a short period of time – can be fatal,” reads information on Kidsafe’s website.

“Children are particularly at risk because they can lose fluid quickly, become dehydrated and suffer from heatstroke.”

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In December 2015, celebrity chef Matt Moran called media to a cooking demonstration at Sydney’s Bondi Beach where he’d prepared a piece of lamb using just the interior heat of a parked car.

“This has been in there for a little over an hour and a half,” said Mr Moran, slicing open the meat in a video of the demonstration, “that to me is overdone.”

– With NCA NewsWire

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