From this November 12 story:
Saint Bernard Parish sheriff's officials say they have arrested about 50 people in some 20 cases of looting since Hurricane Katrina.
The parish is still closed to non-residents, but some people allowed in to work have apparently also take advantage of their access to commit burglaries and thefts.
Major John Doran, chief of detectives for the Sheriff's Office, says the department has made numerous arrests and detectives are assigned specifically to look for looters. Doran says it's difficult to keep track of all the people working at gutting homes and businesses.
He says several hundred thousand dollars worth of stolen property and cash has been recovered and some narcotics have been seized.