GARDA technical experts are examining the charred remains of a car in which the son of the concert promoter, Mr Oliver Barry, died.
The cause of the fire, which killed Mr Brian Barry (24), will not be known for a number of days, and an outside expert is also being brought in to assist with the examination.
Detectives investigating the incident are not treating it as suspicious and believe it to have been an accident.
Gardai who had rushed to the scene in Mulberry Gardens in Donnybrook, Dublin, were driven back as they tried to pull the man from the car, and dental records had to be used to verify his identity.
Mr Barry, an agronomist who worked at the family golf course in Hollystown, west Dublin, is known to have been socialising with friends the evening before his death.
Gardai have established he went to a pub in Donnybrook on Saturday evening to meet friends, but they failed to turn up as arranged.
He subsequently met them at another venue, before going on to a nightclub until the early hours.
Some time later he is believed to have driven the car in which he was found to Mulberry Gardens at 6 a.m. on Sunday.
The engine was heard being revved for some time before it caught fire, and the Garda and Fire Brigade were alerted.
A post mortem conducted by the State Pathologist, Dr John Harbison, established the cause of death as smoke inhalation.
Mr Oliver Barry (57) is from Banteer, Co Cork.
He was a member of the RTE Authority and was involved in the commercial radio station Century, which collapsed.