Sunday's International Rules game descended into chaos

Brennan said the GAA will consult with managers, players and committees but the series "is hanging by a thread".

He described the second test against Australia as "a major embarrassment to the organisation".

He apologised on behalf of the GAA to all who attended the match, especially the 20,000 children who were in Croke.

Brennan's comments follow the violent scenes that marred Australia's win which clinched the series win.

There were several ugly punch-ups throughout the game and Ireland's Graham Geraghty was knocked unconscious and had to be taken to hospital.

Irish management accused the Australians of deliberately targeting Geraghty and other players and were incensed that the Australian referee did not send anyone off.

Ireland manager Sean Boylan said on Monday that he would "hate to see the bully boys win" and would like to think that "everyone had done everything they can to rescue the series".

However his predecessor Pete McGrath said he believed those calling for the series to continue were "defending the indefensible".