The Armed Offenders Squad was called out in Invercargill around five o'clock this afternoon, to a domestic incident in Wilfrid Street.
Police say a distraction device was used before squad members entered the house, and was heard by neighbours.
Police say a loaded firearm was found at the address, and following further inquiries a 40-year-old man was found at a Mary Street address by the AOS and taken into custody.
He'll appear in the Invercargill District Court on Monday facing a number of charges.
No one was injured in the incident.
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