Two children and an adult were shot dead outside a Jewish school in the southwestern French city of Toulouse on Monday morning by a gunman who fled on a motorbike, local media reported.
Two others were injured, Xinhua reported.
French Interior Minister Claude Gueant, who rushed to Toulouse later in the morning, has ordered "to strengthen surveillance" around Jewish schools in France, Europe 1 reported.
President Nicolas Sarkozy will also head to Toulouse and visit the school. He will be accompanied by Richard Prasquier, President of the Representative Council of Jewish Institutions in France (CRIF), said Europe 1.
Police in southwestern France launched a major manhunt last week after the killing of three paratroopers and the wounding of another in two separate but connected incidents. The attacker in both cases fled on a scooter.
According to French paper Le Figaro, authorities said the weapon used in Monday's shooting was the same kind that was used in last week's attacks on the paratroopers.