SOUS-BOIS, France, Oct 27, SPA-- Marauding youths torched at least two public buses Friday, as police deployed 4,000 reinforcements across France on the anniversary of two deaths that ignited weeks of riots in the country's most troubled areas, AP reported. Paris' transport authority curtailed bus services in the Seine-Saint-Denis region north of the capital, which is home to thousands of immigrants and their French-born children. One bus was engulfed in flames on Friday in the nearby town of Le Blanc Mesnil, as firefighters deployed to douse the blaze at the foot of a high-rise housing project. The blackened carcass of another bus that was burned earlier stood across town in Le Blanc Mesnil. The Paris area RATP transport authority said four buses had been burned but firefighters confirmed only two. Two armed men forced passengers off the bus in the earlier attack, police said. The RATP said it had partially halted bus traffic until early Saturday morning in Seine-Saint-Denis.