61.   But in San Diego, investigators were skeptical.

62.   But investigators are still trying to determine at what point the mamey could have become tainted.

63.   But investigators are uncertain whether Gilani was involved in the abduction.

64.   But he said the investigators were especially concerned about attacks that came from Republicans close to Gingrich.

65.   But international investigators are perplexed at the stock response from local officials that an investigation is still under way.

66.   But investigators were unsure whether he grew up in the Kansas City area.

67.   But Lewis said investigators were not able to link Williams to those slayings.

68.   But last week, task force investigators were in New York looking into the Raoul story again.

69.   But investigators are certain it stemmed from an intense hatred for police.

70.   But investigators are still not certain of the identities of the hijackers because some of them may have used false identification to enter the country.