Police corruption does not run in 20-year cycles, as a series of investigations over the decades might suggest.

That is essential for a credible series of investigations into state and city agencies.

His find quickly initiated a series of archaeological investigations and excavations.

They were to carry out a series of investigations beginning today and ending on Thursday.

But from that modest beginning came an unusual series of investigations.

The charges resulted from a series of investigations that began in June 1991.

A series of investigations and trials followed, continuing into the mid-1650s.

The series led to a series of investigations and reforms.

She has the actors move through a series of structured and unstructured investigations.

His committee also conducted series of investigations into the jueteng scandal.