He said investigators did not connect the string of murders quickly enough and failed to release information about the cases.

Many investigators had tried and failed in the past.

Nonetheless, he said, the investigators certainly failed to show that narcotics speeded death.

In addition, investigators have failed to recover about 20 percent of the center fuel tank, mostly from its two sides.

Criticism continued over the years as investigators failed to develop enough evidence to charge anyone.

For several weeks the investigators tried but failed to talk to Mr. Teitelbaum.

Although federal investigators failed to bag the man they had identified as the primary target, Cianci eased their regrets by taking himself down.

The police official, who spoke on condition of anonymity, said that investigators had failed to establish a motive for the killing.

We think that will help keep you safe and sane where other investigators have failed.

This indicated that the investigators had failed to get to the bottom of the matter, and questions were raised about the integrity of the inquiry.