The Paris police said the clashes took place from yesterday night to early today around the Place de la Republique on the sidelines of the "Night Rising" protest movement. A police car was set on fire and projectiles were thrown at police. The police used tear gas to disperse the crowd around 2 AM. No injuries were reported.
The "Night Rising" movement started March 31 when some protesters denouncing the government's labor law changes decided to camp overnight in Place de la Republique. The square in eastern Paris became a symbolic gathering place after last year's deadly attacks upon Parisians.
The ban, valid until Monday, also prohibits bringing alcohol to the square and selling alcoholic beverages to take away.
Consumption of alcohol is generally allowed on the streets in France but local authorities can apply restrictions in certain areas.