Or if they do, then it's after a long and arduous investigation.

A long investigation could present problems for the four accounting firms.

It is the first criminal action brought by the agency in its long investigation of the tobacco industry.

We began a long investigation of each other's body.

However the judiciary system did not charge him after a long investigation.

"This will be a long and extensive investigation," he said.

"This is just the beginning of a long investigation," he added.

A long investigation led to the dismissal of the criminal charges.

Another is to establish facts by long and patient investigation.

After a long investigation of the athletic department there, the university closed down the basketball program completely from 1985 to 1989.