(New Orleans, LA)  --  Police say a woman was fatally shot Tuesday night in a room at a hotel on New Orleans' Canal Street.  Authorities say by the time police officers arrived, 20-year-old Kenyra Johnson of New Orleans was in the lobby of the hotel.  She was taken to a hospital, where she later died.  Police say it's unclear how Johnson got from the fourth-floor room, where she had been shot, to the lobby.  Hotel guests were told to wait outside as detectives gathered crime-scene evidence.  Investigators have not identified any suspects.