Calls surfaced Tuesday on social networks for Muslims in France to defy an official ban and hold fresh protests over an anti-Islam film that has sparked violent reactions across the world.

The messages on Twitter and other sites called for demonstrations to be held Saturday in Paris, Marseille and other major cities, a week after police in the capital arrested 150 people for taking part in a rowdy protest near the US embassy.

It was not clear who was behind the appeal that comes after France's interior minister said he will prevent any further such demonstrations taking place.

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