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Namibian coach Dave Waterston is facing an IRB investigation into comments about Australian referee Andrew Cole following Sunday's defeat by Ireland.

Waterston was annoyed with Cole's performance and claimed that in order to officiate in big games, referees had to 'lick the backsides of the bigger nations'.

This statement has not gone down well with the IRB, who will have discussions with World Cup tournament director Fraser Neill the possibility of taking action against Waterston.

"We are now considering what action we will be taking," confirmed IRB press officer Chris Rae.

"Clearly that statement was unacceptable and highly inappropriate.

"We will be contacting Namibia and I will be speaking to Fraser Neill about where we proceed from here."

Meanwhile, Rae confirmed that a final decision on whether Ireland lock Paul O'Connell would be cited for his robust rucking of opposite number Archie Graham at Aussie Stadium would be made later on Monday.

Indications are that O'Connell, who is celebrating his 24th birthday, will escape without punishment.