Police have been called to the Mobil petrol station in Kaikohe after reports of a stabbing.
A police spokeswoman said police were called to a Broadway Ave, Kaikohe address following a report of an assault about 4.45pm.
"Police are currently making inquiries into the circumstances of the incident and are working to locate the other party involved," she said.
A witness told the Herald that "there was an argument and a scuffle and someone got stabbed".
A St John Ambulance spokeswoman said an ambulance was called at 4.48pm and has taken a patient with serious injuries to Bay of Islands Hospital at Kawakawa.