Islamic State supporters in New Zealand are being monitored, a police spokeswoman says.
Since the Paris atrocities early last Saturday, several local Muslims have changed their Facebook cover photos to the Isis flag.
At least one has voiced his support for the attacks and Isis ideology.
The Herald has chosen not to identify the names of the pages.
"Police and other agencies are aware of and have an interest in the activities of people who might hold or express views that could be of security concern, and will take appropriate action where required," a police spokeswoman said.
A spokeswoman for the Minister in Charge of the Security Intelligence Service, Chris Finlayson, said the security risk for New Zealand was slightly higher now than a year ago.
"The minister does not comment on operational matters but notes that NZ's domestic threat level, which is under continuous review, remains low." She said there were still 30-40 people on the Government's watch list.
One of the pages on Facebook was disabled about noon yesterday after the Herald approached police.
Meanwhile, Prime Minister John Key will not categorically rule out sending ground troops to Iraq as countries consider greater commitments to combat Isis following the Paris attacks.
French President Francois Hollande has called for a "grand coalition" to fight the extremist group, and plans to travel to the US and Russia soon to seek the support of both countries' leaders.
New Zealand has already contributed 200 troops to Iraq to train local forces. Speaking to reporters in Manila yesterday, Mr Key reiterated that this was a "fair contribution" and that there were no plans to increase military support to the region.
Asked whether NZ would consider sending ground troops as part of a "grand coalition", he said:
"To be blunt, I don't have any information, I don't know anything about that situation, I can't tell you what might happen in 10 years' time. But it's not our intention to put troops on the ground. Our intention is to continue to train troops."