The International Boxing Federation has confirmed the "mystery man" accused by Amir Khan of interfering with judges' scorecards in his defeat against Lamont Peterson is not an official of the organisation.
The boxing authority said Mustafa Ameen is neither employed nor a sanctioning official, as had been previously claimed by one of the promoters of the fight.
"Mr Ameen does outreach work for the IBF's Sarb [Special Assistance for Retired Boxers] Education Fund," the organisation said in a statement.
The admission by the IBF confirms the claims of Khan's trainer, Freddie Roach, that Ameen is not a boxing official.
The organisation said Ameen is not paid for his work with Sarb, which was created to financially assist retired professional boxers experiencing monetary difficulties.
The IBF has decided to break its silence and provide clarification on Ameen's ringside presence during Khan's controversial split decision defeat to Peterson in Washington DC last month.
The statement added: "Mr Ameen agreed that he would network on behalf of the organisation with the purpose of connecting with these fighters in order for the IBF to provide them with some financial assistance.
"Mr Ameen is not an employee or an official of the organisation, nor does he receive any monetary compensation from the organisation for his efforts."
The statement by the IBF will now add further weight to the Khan camp's demand for the bout to be declared a no-contest and a rematch ordered.
Such a move would see Khan's world titles reinstated.
The IBF also claims in the statement that the Washington DC Boxing and Wrestling Commission provided a pass for the fight for Ameen, at its request.
The appeal hearing into the fight will be heard on 18 January in Newark, New Jersey.
The IBF has also confirmed that "mystery man" Ameen will attend that hearing to provide evidence.
"Mr Ameen will be present at the hearing to explain his actions and what transpired during the bout between him and Mr Welsh, the WBA supervisor," said the organisation.
BBC Sport understands that both Khan and Peterson are also likely to attend.
Richard Schaefer, chief executive of the Golden Boy company which promoted the Khan-Peterson fight, had claimed Ameen is an IBF official who was given accreditation for the fight but was not directly involved in it.
But it was a view that Roach was quick to question.
Khan lost his WBA and IBF titles to Peterson following the defeat but has continued to question a number of aspects of the fight on Twitter and in television interviews.
The WBA, which sanctioned the fight along with the IBF, has told BBC Sport it would like to see a rematch because of questions over the integrity of the bout.
Olympic silver medallist Khan lost his light-welterweight titles, having been deducted a point in two rounds by the referee for pushing his opponent.
Judges George Hill and Valerie Dorsett scored the fight 113-112 to Peterson, while Nelson Vasquez gave the verdict to Khan 115-110.