The New Zealand Embassy in Paris is working with French authorities to find out whether any New Zealanders have been caught up in the French truck attack.
"Local authorities have advised people in Nice to stay indoors while the facts around the incident are being established."
The Ministry of Foreign Affairs says there are 882 New Zealanders registered as being in France.
A statement on the SafeTravel website says: "New Zealanders in Nice are advised to stay away from the affected area and keep themselves informed of potential risks to safety and security by monitoring the media and other local information sources. Security operations are on-going and you should adhere to the instructions of local authorities at all times, including any restrictions on movement."
MFAT has sent a message to all New Zealanders registered as being in France, encouraging them to get in touch with family in New Zealand to confirm their well-being and providing contact numbers if they require consular assistance.
At this stage there has been no change to the travel warning of 'some risk' in France.
The listing on the SafeTravel website says: "due to the on-going threat of terrorism... we advise caution."
MFAT is strongly urging any New Zealanders in France not registered with www.safetravel.govt.nz to do so.
They are also asking anyone who has concerns for a family member to try making direct contact with them before going to MFAT, however if people have on-going concerns they can contact the Ministry of Foreign Affairs:
04 439 8000 (if calling from within New Zealand)
+64 4 439 8000 (if calling from outside New Zealand)