Police have confirmed the items at the centre of Marton's lockdown on Wednesday afternoon were detonators.
Much of central Marton was closed as police responded to what was believed to be explosives found in a car.
Police were alerted around 1.30pm, after a member of the public reported to the police station in the Rangitīkei town with what was believed to be explosives in their vehicle.
It is understood the member of the public found the items at a private property and travelled to the police station in Stewart St to hand them in.
A cordon was swiftly put in place on Stewart St from Morris St to High St.