Investigators are finally making some headway on last month's mysterious plane crash. The Associated Press reports that Flight 447 from Rio de Janeiro to Paris did not break up in the air, but plunged vertically into the Atlantic Ocean in June, according to lead French investigator Alain Bouillard. Uninflated life vests were found among the wreckage. The crash killed all 228 people aboard the plane. The plane's black boxes have not yet been found, but according to Bouillard the search has been extended by 10 days and will continue until July 10.