Brand said that no one was injured in either of the incidents.
One 43-year-old man has been charged with intent to injure with a firearm, unlawful possession of a firearm, and unlawful possession of ammunition. This person also faces unrelated charges of cultivating cannabis and committing a burglary with a firearm.
One 20-year-old man has been charged with discharging a firearm, intent to injure with a firearm, and committing a burglary with a firearm.
A 19-year-old man and an 18-year-old man have also been charged with intent to injure with a firearm.
They are all due to appear in the Auckland District Court.
Brand said police inquiries into both incidents remain ongoing.