Police responded to reports of the incident around 1pm at Paramount Parade, which houses a Countdown, a gas station and several other businesses.
The alleged offenders were tracked to an address in the area where they were apprehended, police said.
They also reportedly seized some weapons.
Police said CCTV footage or cell phone footage of the incident would be helpful.
Anyone with information which could assist police has been asked to update online or call 105 quoting file number 250604/4542.
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.