Locals are urged to remain vigilant after Police uncovered seven firearms at a Warkworth property on Sunday morning.

A 50-year-old man is now facing multiple firearms-related charges following the discovery.

Waitematā North Area Prevention Manager, Senior Sergeant Roger Small, stated that Police responded to a report of a firearm at an address just after 9 am.

"Armed Police conducted multiple door-knocks at the property, but the occupants were not at home," he said.

During the search, officers observed two firearms in plain sight inside an old bus on the property.

Upon further inspection, two additional firearms were found hidden under a makeshift bed inside the bus.

Shortly after, the occupier of the house returned, and the 50-year-old man was immediately arrested for allegedly breaching his bail conditions.

A comprehensive search of the property later revealed three more firearms and an undisclosed amount of cannabis.

In total, seven rifles of varying calibres were seized.

The arrested individual is scheduled to appear in the North Shore District Court, facing ten counts of illegally possessing a firearm, restricted weapon, or explosives.

He also faces charges related to cannabis possession.

"Police are very happy to have these firearms out of the hands of those who might use them recklessly in our community," said Senior Sergeant Small.

The origins of the weapons are now under investigation, with authorities considering the possibility that some of the firearms may have been stolen.

Anyone who has had firearms, particularly rifles, stolen is encouraged to contact Police on 105, quoting file number 240825/7107.

Anonymous tips can also be provided through Crime Stoppers at 0800 555 111.