A three-year-old boy died in a roasting car after he climbed into his neighbor's unlocked vehicle and was unable to get out.

Jahcari Kash James was found unconscious inside a hot vehicle at 3.15pm Friday in Ponchatoula, Louisiana, where temperatures reached a sweltering high of 93 F.

Ponchatoula police were called to the residence in the area of Methvin Lane, where detectives believe the child wandered from his home and entered the nearby parked car. 

Family members noticed the three-year-old was missing and turned to neighbors for help. 

'A short time later, the vehicle owner located the child in the driver’s seat of the vehicle, where temperatures were extremely high,' the department said in a Facebook statement.

'The child’s family members attempted life-saving measures while awaiting the arrival of emergency services,' they added.

Jahcari was taken by ambulance to North Oaks Medical Center in Hammond, where he was later pronounced dead.

The medical examiner noted the child was in the car for 50 minutes, the police told Daily Mail.

The investigation is ongoing, the department said, adding that no further details will be released at this time, and they are not ruling out possible criminal charges.

The department also shared they are awaiting the autopsy results as of Monday morning. 

A GoFundMe page was created to help ease the financial burden of funeral expenses and support the grief-stricken family during this tragedy. 

'Kadence James is facing an unimaginable loss after the passing of her beloved son, Jahcari Kash James, who was only three years old,' the fundraiser said of the boy's mother.

'Kadence is now navigating not only the grief of losing Jahcari at such a young age, but also the challenge of caring for her daughter, Ke'manii, while managing the unexpected financial burdens that come with funeral expenses and daily living costs.'

'To anyone who donates or sends prayers, your kindness is deeply appreciated. Kadence and Ke'manii will forever be thankful for the support and compassion shown to them during this difficult time,' it read.

Social media tributes poured in for Jahcari as mourning family members shared photos. 

'My heart [is] so broken,' Syntoria Barnes, who identified himself as the boy's godfather, wrote on Facebook. 

'Fly high my baby boy! Y’all please keep my family in your prayers at this difficult time,' he added.

Desiree Partirdge, who identified herself as the three-year-old's godmother, also shared her devastation.

'I'm so heartbroken,' Desiree Partirdge, who says she is the boy's godmother, shared to social media. 'It's so unreal. I miss you so much godson,' she added. 

Chloe Burke of Kids and Car Safety explained to WBRZ2 just how hot the interior of cars can get during a brutal heatwave. 

'On an 80 degree day, for example, the interior temperature of the car will be 100 degrees in just 10 minutes. So in about an hour, for example, temperatures on the interior of the car can reach 130 or 140 degrees,' Burke said.

'Cars have what's called the greenhouse effect, where they're able to easily trap heat and not be able to get rid of that heat. With heat stroke in children, their bodies heat up three to five times faster than the bodies of adults,' she added.