The number of cars burned in overnight unrest in France dropped again from Wednesday to Thursday, with 482 vehicles burned, down from 617 the night before, a police spokesman said. The reduction in vehicle torchings - a barometer of the French unrest - "is an encouraging sign that does not, however, diminish the police effort," national police spokesman Patrick Hamon said. Hamon said the violence, which had spread throughout France, now appeared to be concentrated in certain cities, including Toulouse, Lille, Lyon, Strasbourg and Marseille. Police took 203 people into custody overnight and one police officer was injured in the unrest, Hamon said. The peak in car burnings came Sunday-Monday, with 1,408 vehicles torched. The number of incidents has dropped every night since then.