Prime Minister John Key says a small number of Kiwis are under 24-hour surveillance for a potential terrorist threat in the country.
Speaking in Hobsonville this morning, Mr Key said there were about 40 New Zealanders who the Government was concerned with the "type of material" consumed.
He couldn't say who was monitored but in order to be warranted, "your actions had to warrant" it.
However, he said he wasn't concerned about his own safety.
"Overall, New Zealand is a much lower threat but we are not immune to it," he said.