"Was that the naval plane lost in the early investigation?"

He had taken a bullet in the knee on an earlier investigation.

An earlier investigation led to the conviction of 26 men on gambling charges.

She also made use of earlier investigations compiled by students.

The senators said the Pentagon's earlier, criminal investigation had not gone far enough.

Both were charged with lying to investigators in earlier investigations.

Several earlier investigations have not convinced this group that the whole story of the missing has been told.

I would have to find the time to make one of my little charts, which had proved useful in earlier investigations.

An earlier investigation by the archdiocese had cleared the men.

An earlier investigation of the three by the archdiocese had cleared them.