The investigation was dropped upon the decision of city's attorney.

Two days later, police dropped their investigation due to a lack of evidence.

The investigation was ultimately dropped due to lack of evidence.

Under the Bush administration, a criminal investigation into the incident was started, but later dropped.

But the weeks and months went by with no indication that the investigations against him would be dropped.

Does that also mean I'm to drop my investigation into the attack upon you?

"But I am not going to drop our investigation based on his bizarre explanation."

The investigation was dropped with no action taken, Cephalon has said.

The investigation was dropped in November 2000, "with no action deemed necessary."

"Well, if all of us have just one lucky day, then maybe dropping your investigation will bring an end to this mess."