41.   A grand jury is investigating the case.

42.   A law enforcement official said the case was investigated further, but declined to say how.

43.   A police officer and two lab technicians involved in investigating the case tested positive for exposure.

44.   A special state prosecutor is still investigating the case.

45.   A third case is being investigated.

46.   A spokesman for Maricopa County Attorney Rick Romley said Thursday that the office is investigating the case but has yet to receive all of the DNA results.

47.   After more than a year of investigating the case, including numerous written communications with Evans, Garrett said police finally identified the suspect two weeks ago.

48.   Agents from the FBI, the Air Force Office of Special Investigations and the Bureau of Alcohol, Tobacco and Firearms investigated the case.

49.   Air Force researchers are expected to investigate each case.

50.   Already, a similar operation has been founded at FBI headquarters in Quantico, Va., to investigate cases nationwide.