Aviation Security (Avsec) is investigating the recent Auckland Airport incident in which a woman made it through the international terminal with a knife.
On Tuesday the international terminal was put on hold, causing a large backlog of people going through security after the woman continued through into the terminal, setting in motion a security emergency.
Avsec said it was investigating the incident and reviewing CCTV footage.
"The back-up processes in place proved effective as the item and passenger were identified and found before boarding any flight, so there is no need for any immediate change to current screening arrangements.