Forensics links 3 French motorbike attacks (CBS/AP) TOULOUSE, France - The shooting deaths of four people, including three children, by a motorcycle gunman outside a Jewish school in the French city of Toulouse has been linked to two deadly attacks in the same region last week that killed three French paratroopers and left another seriously injured. Investigators said Monday that forensic tests have shown the same weapon was used in all three attacks. The motive is unclear, but the targets all have been ethnic minorities. A 30-year-old rabbi and his 3-year-old and 6-year-old sons were killed in Monday's attack, just before classes started at the Ozar Hatorah school, a junior high and high school in a quiet residential neighborhood, Toulouse Prosecutor Michel Valet said. Witnesses said the man worked at the school. Police identified the fourth victim as the 10-year-old daughter of the school director. A 17-year-old was critically injured. The children were chased inside the school. French President Nicolas Sarkozy denounced "the savagery" of Monday's attack on a school, and vowed to find the killer or killers. Interior Ministry spokesman Pierre-Henry Brandet told The Associated Press that the suspect in Monday's school shootings made his getaway on a dark-colored scooter - just as the assailant or assailants did in the two shootings last week. The school targeted Monday, behind a high white wall with few external markings, was cordoned off by police, who then escorted other children out as forensics police combed the scene. On March 10, a gunman on a motorbike shot and killed a paratrooper in Toulouse. Last Thursday, a gunman on a motorbike opened fire on three uniformed paratroopers at a bank machine in Montauban, about 30 miles from Toulouse, killing two and critically wounding the other. Forensic analysis showed the same weapon was used in the shootings in Montauban and Toulouse. France has the largest Jewish community in western Europe, estimated at about 500,000. France also has the largest Muslim population in western Europe, about 5 million. A man who lives near the school said he spoke with the father just before he was shot and killed. "I said "Bonjour" to him like normal," said the 29-year-old, asking to be identified only by his first name Baroukh. Then he went out into the school entrance. I heard the shots and I turned around and saw him on the ground. He looked dead. But I didn't have much time to see who did it because I panicked and started running away. Sarkozy visited the school accompanied by Richard Prasquier, the president of CRIF, the umbrella group representing Jewish organizations. "It's a day of national tragedy," Sarkozy said after arriving. The barbary, the savagery, the cruelty cannot win. Hate cannot win. The nation is much stronger. In Jerusalem, Israeli Defense Minister Ehud Barak said "whether it was a terror attack or a hate crime, the loss of life is unacceptable." Einat Wilf, an Israeli legislator from the Independence Party, said legislators were being briefed on the shooting. Special prayers were being offered Monday at Notre Dame Cathedral in Paris.