Queen St in Auckland is congested as firefighters attend to a suspected "asbestos-related incident".
Six fire engines and a hazardous materials unit at the incident at the intersection of Queen St and Wellesley St East.
Fire and Emergency was called to check a fire alarm that had been activated in the ASB Bank building.
A spokesman said no sign of fire was found.
"There may be an asbestos-related incident."
He said there was no need for the public to be concerned, but the intersection might remain congested for some time.