A New Plymouth supermarket was reportedly put into lockdown with armed police in the street outside the store.
While details are scarce, a shopper has told the Herald everyone was locked in the Countdown supermarket on Hori St in New Plymouth.
The elderly woman said customers were being told to stay inside the building and away from the front of the store.
"I arrived at the store about 11:30 and there were two cop cars on the street. It was when I was shopping we were told to stay inside," the woman said.
"There were a few armed police around the car park and outside the store. It looked like something was happening over the road."