World | Air France Signals Detected, but Officials Deny They're Flight 447's Submarine sent to probe ocean floor By Matt Cantor Posted Jun 23, 2009 6:28 AM CDT Copied In this photo released by Brazil's Navy, pieces of debris of the Air France Flight 447 are seen on Brazil's navy ship Caboclo, at the port of Recife, Brazil, Friday, June 19, 2009. (AP Photo/Brazil's Navy/HO) Rescuers are hot on the track of signals picked up deep in the Atlantic that could be from one of Air France Flight 447's black boxes, Le Monde reported today, but a French official denied that the signals could be originating from the doomed plane's flight recorder. “The black boxes have not been detected,” the official tells the AP. While Le Monde says a submarine was sent to investigate, a source tells Reuters it wasn’t “the first time sounds had been heard.” Read These Next CBS News boss pulls 60 Minutes segment critical of Trump policy. Kansas City Chiefs moving across state line. Camera records 'dirty eruption' at Yellowstone National Park. Feds strike another blow in war on wind turbines. Report an error