Blackcaps coach Gary Stead fears alleged racist taunts may spoil celebrations of his side's resounding first-test victory over England at Mt Maunganui.
NZ fast bowler Neil Wagner scooped up five wickets on the final day to scupper the tourists with more than an innings to spare, but attention quickly turned to the reception given to England star Jofra Archer during his brief stay at the wicket.
NZ Cricket is investigating video footage to find the spectator that directed racial comments at the Barbados-born tail-ender, who tweeted about the experience afterwards.
"A bit disturbing hearing racial insults today whilst battling to help save my team, the crowd was been amazing this week except for that one guy, @TheBarmyArmy was good as usual also."
He later told ESPN that the man had been a Kiwi spectator making comments "about the colour of [his] skin".
"I don't think it would happen in England."
The morning after, Stead was asked if the incident detracted from his team's achievement.
"Absolutely," he responded. "We don't condone that at all and we don't want it to take the gloss off a fine victory for New Zealand."
Several Blackcaps players have sprung to their rival's defence, posted their support on social media.
"I'm not on Twitter, so I don't see those tweets, but I'm sure they are," affirmed Stead.
NZ Cricket chief executive David White planned to personally apologise to Archer on Tuesday.
"It's incredibly disappointing," White told Newshub. "It was a fantastic test match, great atmosphere off the field.
"When we play England, it's always a hard-fought battle on the field, but no overt aggression or distasteful behaviour between the players."
White insisted NZC would continue to search for the culprit and if found, they would be reported to police and banned from future cricket matches in New Zealand.