Another search warrant was executed today at a Kauika Rd property in the Avenues, supported by the Armed Offenders Squad.
A 35-year-old man was taken into custody in relation to unlawful possession of a firearm.
Pilmer said inquiries were ongoing and he wanted to reassure the community that the incident was isolated.
Brodie Stone covers crime and emergency for the Northern Advocate. She has spent most of her life in Whangārei and is passionate about delving into issues that matter to Northlanders and beyond.