31.   Airline officials said it was unlikely the plane could have exploded from an internal malfunction if the engines had not yet been started.

32.   Airline officials said it was unlikely the plane could have exploded from an internal malfunction since the engines had not yet been started.

33.   Airline officials said it was unlikely the plane could have exploded from an internal malfunction if the engines had not been started.

34.   Another witness said she too heard the plane explode before it crashed.

35.   An unidentified plane exploded while flying over the Alps early Thursday, and authorities launched a search for the wreckage, French media reported.

36.   Bosnian Serb military sources said the plane exploded in mid-air, but refused to confirm that they shot it down.

37.   But witnesses claim the plane explode in midair before plummeting into the river.

38.   Colombian Air Force chief Gen. Hector Velasco said the plane exploded on impact.

39.   Donna Bowan, who lives in the area, says she was mailing a letter when she looked up and saw the plane explode and go down.

40.   Experts were conducting a wide range of tests on the wreckage, including ones to determine whether the plane exploded and caught fire before or upon impact.