French soldiers patrol near the Louvre Museum in Paris as part of the highest level of “Vigipirate” security plan January 8.

Muslims places of worship in two French towns were fired upon overnight, leaving no casualties, Agence France-Presse reported prosecutors as saying on Thursday.

Three blank grenades were thrown at a mosque shortly after midnight in the city of Le Mans, west of Paris, and shots were fired in the direction of a Muslim prayer hall shortly after evening prayers in the Port-la-Nouvelle district near Narbonne in southern France.

An explosion at a kebab shop near a mosque in the eastern French town of Villefranche-sur-Saone on Thursday morning also left no casualties.

A local official described the explosion as a “criminal” act.

“It is a criminal act,” a local official told AFP, adding that a police investigation has been opened.

France is on edge following the deadly assault by heavily armed gunmen on satirical magazine Charlie Hebdo on Wednesday that left 12 dead. No link has yet been established between the attacks.

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