This is too anecdotal. Too much "a friend of a friend knows a guy who heard . . . "
We'd need far more info from more sources to really put any stock in this. I do believe the entire local government there is as corrupt as anything in Mexico. Giving Mayor Nagin more millions to fix the city is basically paying the fox to rebuild the henhouse.
The new Police Chief there has even freely admitted he'll confiscate citizen's guns again. Never mind that pesky Constitution and Bill Of Rights.
Many of the citizens who came out of that waterlogged hole were undocumented - not aliens, just not known by official agencies. A certain class of citizen likes to remain 'under the Man's notice' - until something happens and they want their handouts. Who knows where many ended up? On the dole in another town, methinks.
New Orleans is a cesspool we will be smelling for a long time to come.