Police, ambulance and fire crews were called to a vehicle that was on its side with two people trapped in Hastings.
Emergency services were called to the intersection of Market St and Southampton St about 5.08pm on Saturday.
A Fire and Emergency New Zealand spokesman said two people were freed from the vehicle.
A Hato Hone St John spokeswoman said two ambulances and a manager attended. Two patients were treated for minor injuries and were not taken to hospital.
Traffic diversions were in place and drivers should avoid the area if they can, a police spokeswoman said.