Found this on the best place you'll get up to the minute news about New Orleans.
http://www.wwltv.com/local/stories/WWLBLOG.ac3fcea.html
7:32 P.M. - N.O. Mayor Ray Nagin declares Martial law in the city and directs the city's 1,500-person police force to do "whatever it takes" to gain back control of the city. He will also enlist the aid of troops.