Three people are in police custody in Palmerston North, after threats were made towards a customer at a New World supermarket.
The Armed Offenders Squad cordoned off the area, but the offender had already fled to an address on Church Street.
Police said they were still working on the details of the threat, although they said earlier they were responding to reports a man had a gun and was threatening a customer in the store.
Police would not confirm whether the man had a weapon on him when they spoke to him.
They have asked for witnesses and people who might have information on the incident to come forward.