SECURITY for Australian-led Great War centenary commemorations in northern France next week is under review in the wake of the deadly Nice attacks.

Both French and Australian authorities had already put in place detailed security arrangements for events at Fromelles and Pozieres and elsewhere about the Australian Remembrance Trail in the Somme region.

But the level of bag checks and police road blocks were now being reviewed as well as whether further measures will be needed, authorities confirmed following the truck-attack in Nice, about 1000km away in the south.

Up to 3000 people including dignitaries from both countries and relatives of those killed in Western Front battles were expected to attend ceremonies and other events over four days from next Tuesday. Those travellers began arriving this weekend.

News Corp Australia has confirmed Australian intelligence agencies have been in direct contact with French counterparts specifically on commemorations in the wake of events in Nice.

“There are no particular threats related to Fromelles or Pozieres … we are working with French counterparts to ensure appropriate security measures are in place but we are not aware of any specific threat to Fromelles or Pozieres,” a source confirmed.

The Australian Government has formally told Australians travelling to the French region to “exercise a high degree of caution”.

Anzac Day this year at Villers-Bretonneux was held under unprecedented security, including airport-style metal detector archways, searches, dog bomb squads and total event lockdown with a small army of police, gendarmerie and military.