Smith, who has a girlfriend, was spotted entering the toilet with a woman last month following a Test against the Springboks.

The 27-year-old was in team uniform and about to fly out to South Africa for a Test match.

A member of the public raised the issue with All Blacks hierarchy who learned of the matter while on tour in South Africa and subsequently sent him home and suspended for one match.

The woman who reported the incident said the female entered the toilet before Smith’s arrival with the pair proceeding to make “noises” which could be heard by her young son.

"I've made a huge mistake, a huge error in judgement," Smith said.

“My behaviour was unacceptable and if you could respect me and my partner in this situation … I’m just trying to get home to deal with this. Thank you.”

Smith’s actions led to New Zealand Prime Minister John Keys weighing in on the issue.

“I think Aaron has clearly let himself and those that are close to him down, there’s no question about that,” Key said.