Firefighters have been forced to evacuate part of the main shopping area and library in the Taranaki town of Stratford due to a gas leak.
Deputy chief fire officer Kevan Old said the firefighters were unable to isolate the leak as the rupture was located below a shut-off valve.
Officers have therefore evacuated the area as gas was pumping out into the air with a westerly wind currently blowing.
He said the gas authority, who were needed to shut the gas off, were approximately 50 minutes away.