A St John ambulance hit and injured three people outside Auckland Hospital.
Police were at the scene this morning, when an ambulance appeared to have mounted a kerb and hit a bus stop.
The accident happened shortly before noon while the ambulance was carrying a patient in a moderate condition to the hospital.
They were unhurt in the crash.
The ambulance was not believed to have been driving under lights and sirens at the time, police said.
At this stage it appears that three people waiting at that bus stop have only moderate and minor injuries.
These people were being seen by medical staff at the hospital, supported by St John territory managers.
Three ambulance officers including the driver were uninjured.
The cause of the crash is not yet known and the driver will be spoken to in due course, police said.
St John responded immediately to the incident, sending three more ambulances, a spokeswoman said.
St John was working with police in the investigation into the incident.