This comes a day after 12 people were killed in an attack at a French satirical magazine

A "criminal" explosion occurred early Thursday at a kebab shop near a mosque in the eastern French town of Villefranche-sur-Saone, officials said, but left no casualties.

"It is a criminal act," a local official told AFP, adding that a police investigation has been opened. No link was suggested with the deadly attack on Paris magazine Charlie Hebdo a day earlier.