Graffiti daubed in blue paint on a community centre spotted by police reportedly read “death to Charlie Hebdo”, “for the prophet”, “we are going to kill you” and “death to the USA”.

Violence erupted over the cartoons of Muhammad in a sensitive area of the town on Saturday night. Police were called out at 11pm to burning vehicles and wheelie bins.

Meanwhile, editors at the magazine have revealed this week’s edition will have two copies – a “responsible” one, for those who criticised the publication of cartoons last week, and an “irresponsible” one, which will be a “normal Charlie Hebdo”.

Editor in Chief, known just as Charb, said the two copies will be written by the same staff but have completely different content. Some 100,000 copies will be published – 25,000 more than usual.

The magazine came under heavy criticism for publishing cartoons of the Muslim prophet last week. European MP Daniel Cohn-Bendit called the editors “idiots” and “masochists”, while France’s Christian Democratic party said the “put the lives of others at risk”.

Charb said: “[you will see] in the responsible edition what people like Cohn-Bendit want to read.”