A gunman on a motorcycle opened fire Monday morning outside a Jewish school in the French city of Toulouse, killing at least four people: a 30-year-old rabbi, his 3-year-old and 6-year-old sons, and the 10-year-old daughter of the school’s director. The shooting comes days after soldiers in the same region were gunned down by a man on a motorbike in two other shootings. Investigators said forensic tests show that the same weapon was used in all three attacks. The motive so far is unclear, but the victims have all been ethnic minorities. Children were arriving for morning classes at the Ozar Hatorah school when the gunman attacked, then sped off. French President Nicolas Sarkozy denounced the “savagery” of the attack.