Two people have been hospitalised after one of Niwa’s Wellington buildings had a sulphur dioxide leak.
A Fire and Emergency spokesperson said the leak was reported at 10.16am, and the building was evacuated.
Crews at the scene raised the response to a second alarm hazardous substance response.
This included five appliances and three specialist support vehicles.
Two people were taken to hospital as a precaution and one appliance remains at the scene in Evans Bay as a precaution.