France will consider imposing a state of emergency to prevent a recurrence of some of the worst civil unrest in more than a decade and urged peaceful protesters to come to the negotiating table, government spokesman Benjamin Griveaux said on Sunday.

Axar.az reports citing Reuters.

Groups of young men with faces masked, some carrying metal bars and axes, rioted on the streets of central Paris on Saturday, setting a dozen vehicles ablaze and torching buildings.

“We have to think about the measures that can be taken so that these incidents don’t happen again,” Griveaux told Europe 1 radio.

The authorities were caught off guard by the escalation in violence after two weeks of nationwide protests against fuel taxes and living costs, known as the “yellow vest” movement after fluorescent jackets kept in all vehicles in France.

President Emmanuel Macron will hold an emergency meeting with the prime minister and interior minister later on Sunday to discuss the riots and how to begin a dialogue with the protest movement, which has no real structure or leadership.

When asked about imposing a state of emergency, Griveaux said it would be among the options considered on Sunday.

Protests began on Nov. 17 and quickly grew thanks to social media, with protesters blocking roads across France and impeding access to shopping malls, factories and some fuel depots.