He is an amateur detective who works closely with the police to pursue criminals.

Some law enforcement experts worry more about losing agents who are pursuing white-collar criminals.

The Bow Street Runners, though they pursued criminals, had to be hired.

They say that prosecutors have been watching too much cable television and should pursue real criminals.

Justice Department officials say they are simply using all the tools now available to them to pursue criminals - terrorists or otherwise.

In these countries, the police and the justice systems have now become capable of pursuing ordinary criminals and imprisoning them.

It was his place to pursue criminals, and here was one who delivered himself into his hands.

It's about cops who pursue criminals who cross the line.

"I'm surprised your parents permit you to pursue criminals, however much you appear to thrive on danger," he declared.