Emmanuel Macron, the president of France, said he had demanded that the government take measures to ensure street unrest does not recur.
In an address to the nation broadcast by BFMTV, Macron said: "I demanded that the government draw all necessary lessons on intelligence gathering and forecasting of such events, and also take measures so that this does not happen again." The French leader added that he expects clear answers.
On Saturday, large-scale protests against the rising cost of living and price increases took place across France. They were accompanied by fierce clashes between demonstrators and police, unrest, pogroms and vandalism.
Radically minded young people smashed shops and set fire to public transport stops and cars. To disperse the rioters, police used tear gas, stun grenades and water cannon.
French Interior Minister Laurent Nunez reported the detention of more than 2,000 people and more than 600 injured law enforcement officers and firefighters. In total, 550,000 people took part in the demonstrations, of whom 110,000 were in Paris.