About 30 passengers have been evacuated and two flights diverted from Palmerston North airport after unattended luggage was left in the terminal.
Police confirmed the situation has been resolved, and there is no threat to the public.
Palmerston North Airport has since reopened the terminal after it was closed following earlier investigations.
Airport chief executive David Lanham said the passengers were moved from the terminal to a nearby building with toilets and other facilities while police dealt with the situation.