A Kerry bookmaker said he was asked to take a bet on the All Ireland quarter-final championship in the time between when the draw was made and when it was broadcast on RTE's Sunday Game programme.
Mr Eric Browne, from Listowel, said he received a call before 9 p.m. on Sunday, asking what odds he would give on the chances of Dublin playing Kerry in the quarter-final of the championship.
He said the man who called wanted to place a four-figure sum on the outcome of the draw on television. He then received a second call offering a large sum of money on Kerry winning the All-Ireland football final.
Mr Browne said he rang a contact in the GAA and was surprised to hear the draw for the quarter-final had been recorded earlier on Sunday, at around 7 p.m. He had been waiting, like everyone else, for the draw which was broadcast on RTE television at 10.30 p.m. on Sunday.
It has now been established that sources within the betting industry became aware of the draw before the public was informed of it during RTE's Sunday Game.
Mr Browne said he refused to take the bet. He said he felt obliged to speak out because the current system was open to abuse. "It's wrong that some people know the draw before the public believe they were seeing it live on RTE television on Sunday night," he said.
A spokesman for RTE said the organisation did not know anything about the bet being made, but "if we discovered any breaks in confidentiality were happening, we would, obviously, look at proceedings and make any changes".
The spokesman said the draw occurred before the Sunday Game was broadcast, but would not say exactly how long.
"It is not appropriate to go into the mechanics of the programme in any detail," he said, but RTE never claimed the draw was broadcast live.
He declined to say how many people were in the studio when the draw was recorded, but said they were told what they were about to hear could not be revealed to anyone, as the information was sensitive.
It is understood the people who witness the draw do not have to sign any legally-binding confidentiality agreement.