Cordons have been lifted after a suspicious item was found at the New Zealand Post international mail centre at the Auckland Airport
A Police spokeswoman said the package has been examined by Defence Force staff and there are no longer any safety concerns.
An airport police officer at the scene told Fairfax the item was identified as a cigarette lighter in the form of a hand grenade.
Emergency services were called to the building on Laurence Stevens Dr around 8.15am after the item was identified by an X-ray machine.
The building was evacuated as a precaution until the scene could be cleared by the Defence Force, as per standard protocol, a police spokeswoman said.