Police use tear gas and arrest 100 yellow vest rioters in Paris on April 20, 2019.

(Photo: AFP/VNA)

Dozens of black-hooded demonstrators threw rocks at police while some others set fire to vehicles, safety barriers and bins. Police used anti-riot grenades and tear gas to disperse the marchers.

Paris was on high alert after French Interior Minister Christophe Castaner said rioters return and intent on wreaking havoc in Paris, Toulouse, Montpellier and Bordeaux. Officials said that many subway metros have ceased operation and 60,000 police officers have been deployed across France.