A cordon put up around properties in the North Shore suburb of Murrays Bay has been lifted.
Police in Auckland had found a "suspicious item" during a search of a house.
Officers set up a cordon on Sunrise Avenue between Wisteria Way and East Coast Road and had asked residents within it to evacuate their homes.
The find, which remains unidentified, was discovered after the Armed Offenders Squad carried out a search warrant .
Police detective inspector Kevin McNaughton said the item had been made safe.
Police remain at the property and a number of occupants were helping police with their enquiries, he said.
Sunrise Avenue has reopened and residents are able to return to their properties.
"Area staff have been liaising with local schools near the cordons and police ensured all students were able to get into school safely this morning," he said.
"We are aware of traffic issues as a result of the operation earlier this morning and we would like to acknowledge the community's cooperation."