But one last time, investigators now fear, they may have been just hours too late.

Although investigators fear Mrs. Silverman is dead, they have yet to find her body.

Mr. Obama was not happy about the timing, but investigators feared some of their targets might flee, the official said.

Meanwhile investigators fear that the case has gone cold.

Since the day after Ms. Aronov's disappearance, investigators have feared that she was the victim of foul play.

Lawyers for the Ibrahim family claim they were "wrongly targeted", although investigators fear revenge attacks.

Some investigators feared they might have fled the country with help from people waiting outside the jail.

We investigators fear no beer.

He subsequently admitted responsibility for five additional homicides, and investigators fear that there might be other, undiscovered victims as well.

But investigators fear that a large-scale electrical failure could have shut down the black boxes, eliminating all but a second's worth of data.