Hart died in hospital the day after the incident.
Investigating officers have obtained CCTV footage from surrounding areas, including the sports club in the park.
Hart was known for his love and knowledge of cars and bikes, along with a high degree of mechanical aptitude. He is survived by his mother, siblings and children.
The Herald approached family members of Hart, who politely declined to comment, saying they had been asked not to speak publicly by police who had said it could compromise their investigation.
It is understood a woman who was present in the car park is forming part of the police inquiry. It is believed Hart may have been working on a car prior to his death.
Angelique Payton, who said she had been a friend of Hart’s for 20 years, spoke to the Herald earlier about Hart’s popularity and kindness.
“He was loved by so many,” Payton said.
“The whole community is devastated and heartbroken.”
She said it had been a tragic loss of “such a bright, intelligent, kind man”.
“He had his whole life ahead of him and he’s going to be missed so much.”