The Parliamentary precinct was locked down this morning and one person taken into custody.
Photo: RNZ / Angus Dreaver
Police received a report of a suspected firearm inside a vehicle outside the grounds about 8.30am.
Parliament security temporarily closed its doors to the public as a precaution.
The sole occupant of the vehicle was detained, and the vehicle searched, but a firearm was not located.
Police say there is no ongoing risk.