France has suffered a fresh outbreak of urban unrest, with three police officers wounded in an attack by a crowd firing shotguns and lobbing petrol bombs. The unrest began after a police unit broke up a fight between around 20 people. Riot police were rushed to the area and used tear gas to disperse the crowd. The incident in Grigny came two weeks after rioting in the northern city of Amiens left 17 police officers wounded. The unrest there has helped place crime and security at the top of the political agenda in France. The new Socialist government has promised to reverse a decline in police numbers with special attention given to marginalized urban areas, which have periodically erupted into violence over the last decade.