41.   But investigators were having trouble identifying it, they said.

42.   But now investigators have a Saudi suspect in custody who might provide answers.

43.   But it appears investigators will have to work without a great deal of information from Lundgren.

44.   But that help has not yet been accepted, an indication, according to the source, that investigators have not run out of leads.

45.   But now that they know who she is, investigators have even more of a mystery on their hands.

46.   But the Navy has a good record for finding black boxes, and the investigators have a good record in using them to determine the causes of crashes.

47.   But so far, investigators have yet to find any evidence of other gunfire other than the bullet that killed Aquan.

48.   But the judge said investigators had a right to see any records that would confirm that one of the suspects was the buyer of the two books.

49.   But the Patterson investigators did have three eyewitnesses who said they saw Fuller and Ferrell flee the scene immediately after the shooting.

50.   But under the deal, the Justice Department will acknowledge that investigators have not unearthed evidence that Huang engaged in espionage or violated national security laws.