The mayor of the French city of Saint-Ouen, Karim Bouamrane, published an official statement condemning acts of spraying Stars of David on Jewish houses in the city.
Stars of David have been sprayed in recent days on a number of buildings with Jewish tenants.
The local police began investigating the cases, which are classified as hate crimes, and the chief prosecutor was instructed by the mayor to use all possible means to find the suspects and arrest them.
Since the beginning of Israel's war against Hamas, more than 800 anti-Semitic incidents have been recorded in France, according to official data from the French government.