Radio New Zealand International reported that this had been disclosed by the force's director general Richard Lizurey in testimony to the defence commission of the French National Assembly.
Lizurey said since last October, 20 officers in New Caledonia have suffered gunshot wounds which is the highest number in any part of the national territory.
He said all elements existed for a situation which had been known before - a reference to the troubles of the 1980s.
In view of next year's independence referendum, he said tensions would only worsen.
Lizurey said the most worrying territory was Mayotte which he said was a "social bomb that would explode".
Another area of concern is French Guyana where he said troops might have to be sent to contain lawlessness as poor people simply tried to get money where it could be found.