He was driven to 90 Mile Beach, where he made his escape, and was assisted by two tourists who found him on the intersection of SH1 and Aupouri Forest's arterial road.
A police spokesman said yesterday that the offender was believed to be a 15-year-old boy, who was suspected of having stolen a single-barrelled shotgun and four rounds of ammunition from a member of his family.
A teenager was found at Kohukohu later in the morning, and was taken to the Kaitaia police station for interview.
The victim was unhurt, and his vehicle was recovered, albeit in severely damaged condition.
No charges had been laid against the teenager at edition time yesterday, but police were considering charges of kidnapping, aggravated robbery, the commission of an offence with a firearm, assault and theft.