Hurricanes back Ma'a Nonu has apologised for an expletive-laden radio outburst soon after the Super 14 rugby defeat of the Chiefs on Saturday night.

Nonu completed an extraordinary interview soon after the match, won 33-27 in Wellington, using the f-word seven times when answering two questions.

The All Blacks second five-eighth was upbeat about his performance in the interview with NewstalkZB, having scored two tries, but today admitted he overstepped the mark.

"After a tough game there was a bit of emotion flying around," he told reporters at Hurricanes training.

"I guess, being a professional sportsman you've got to be responsible for what you say. At the end of the day it hurts a lot of people."

Hurricanes coach Colin Cooper said team management had applied a sanction on the 27-year-old but wouldn't reveal specifics.

Nonu's interview included the following opening response: "After they got a lead of I think it was 24-8 or something, f... we were on our tryline and f... everyone's just, what was hitting us. And 60 minutes later we come on top and we scored a f.....g last minute try to get a f.....g bonus point."