“Fortunately, neither of our officers were injured and the patrol vehicle did not sustain any damage.”
Some hours later the vehicle was detected travelling north on the Waikato Expressway towards Auckland. It was later located at an address in Manurewa where it was seized.
Lamb said occupants of the address were helping police with enquiries.
“Presenting a firearm at a police officer is a serious escalation that puts our staff and the wider community at risk.
“This behaviour is entirely unacceptable. We are taking this incident extremely seriously and will be pursuing all lines of enquiry to locate the offender and hold them accountable.”
Officers in Counties Manukau were helping with the investigation.
Police are asking any witnesses to Tuesday’s incident to come forward.
You can contact Police on 105 or provide information online using the reference number 261111/3764. Information can also be provided anonymously via Crime Stoppers on 0800 555 111.