"I think I might have even had a little boo there," he said.
"I actually didn't hear Maurice swear, but he certainly was getting very excited ... he was punctuating his comments by pointing his finger at Aussie players and at the ref when decisions went the wrong way," he said.
Mr Reid said that at one point the Australian contingent in the box "were not very happy-looking people".
A spokeswoman for Prime Minister John Key said today: "The Prime Minister has the assurance of Minister Williamson and two other independent witnesses that the Minister's behaviour was not inappropriate. The Prime Minister has nothing further to add."
In his article today, the Sydney Morning Herald columnist who wrote the article, Greg Growden, said his sources were "impeccable."
"Our `gossip' is pure gospel," the headline read.