In fact, we got tips about police officers who we had to put under surveillance.

CNN: L.A. manhunt reminiscent of D.C. sniper case

Police have also identified 320 known street criminals who are being put under surveillance and arrested for any crime, street-related or otherwise.

BBC: Police officers

Police found the burned vehicle, registered to England, on Saturday evening, leading them to put him under surveillance and get warrants to arrest him and search his home.

CNN: Police probe possible racial motive in Tulsa killings