As far as I know Marseille is for Corsican what Ontario is for the Calabrians.
This article by Le Figaro gives you a general idea of how many criminal organizations are currently believed to be active in France.

Unfortunately for non-Quebecers, Babel Fish gave me some real poor results. Anyone knows any good free translating software?

- Criminal organizations in France:
http://www.lefigaro.fr/actualite-france/...t-en-france.php

Here's some links related to the Corsicans:

- Updates of the clan wars in Corsica and Marseille:
http://www.lepoint.fr/societe/la-decomposition-des-clans-criminels-corses-08-08-2012-1494119_23.php

- General info of the clan war (posted by Ciccogol on another Corsican thread):
http://www.nytimes.com/2012/05/19/opinion/the-corsican-connection.html?pagewanted=all

- Corsican crime boss Jacques Mariani sentenced to 7 yrs for racketeering
http://www.corsematin.com/article/papier...aix.589754.html