The exact details of what unfolded remain unclear, however, locals say the incident was the result of road rage.
Police are yet to comment on what took place.
A police spokesperson said AOS attended as a precaution.
Motorists in the Bay of Islands reported seeing a large cohort of police cars, sirens blaring, headed north through areas like Kawakawa, Waipapa and Kerikeri.
One person described seeing a police officer in Kerikeri don his bulletproof vest before dashing off.
A police spokeswoman this morning said units approached an address which was cleared around 8.45pm.
“Police spoke to those at the address however no arrests have been made at this stage.”