The person continued through into the terminal, setting in motion a security emergency.
Images of long queues emerged on social media and Auckland Airport said it would restart screening, but said it would take some time to clear the backlog.
Aviation Security have advised there has been a security breach but have now located the passenger involved. They are now going to restart screening but it will take some time to clear the backlog - we appreciate your patience.
Several members of the public tweeted about the security shut-down, with one saying that "Kiwi travellers are very relaxed in the face of massive delays".
Air New Zealand and Virgin Australia flights to Christchurch and Gisborne at 7pm have been delayed as well as flights to the Bay of Islands with the same two carriers.
Something odd happening at Auckland airport. No one being let through security. No details shared. pic.twitter.com/2U55r89vHk
Kiwi travellers very relaxed in the face of massive delays after a security breach Auckland Airport. โSomeoneโs pole vaulted the x-rayโ @AKL_Airportpic.twitter.com/7LycsHqNdg
— ๐๐ธ๐๐ผ๐ ๐๐ผโ๐๐โ (@JKenyonMusic) April 24, 2018