A police operation is underway in a Paris migrant camp that has resurged in recent weeks in a new challenge to French government efforts to tackle the migrant crisis.

Paris police and regional officials say the operation Monday is not an evacuation, but aimed at verifying migrants' documents and sanitary conditions in their cluster of tents.

Footage on BFM television showed migrants pushing back against shields of riot police at the scene in northern Paris, near the Stalingrad subway station.

President Francois Hollande said Saturday that the Paris camp will be evacuated soon.

Aid groups say some of the migrants recently fled a camp being dismantled in Calais, though Hollande said most are from recent migration from Libya.

Such camps frequently surface in Paris, and are routinely cleared out.