Police lacked enough concrete evidence to bring charges against Lowell, so they began surveillance and investigated his background.

The police deemed the attack a bias incident and began round-the-clock surveillance.

Added text about the age at which to begin surveillance for polyposis.

After this the police began surveillance on the studio, believing other illegal activities were taking place inside.

I want to begin surveillance on him by tomorrow morning,' Irving said.

The total was the highest since the agency began surveillance for the disease in 1982.

Sydnor and Greggs begin surveillance of the safe house immediately.

The department began surveillance of the gang members after those incidents, and started the investigation seven months ago.

This established the precedent that a warrant needed to be obtained before beginning electronic surveillance even if domestic security issues were involved.

Police began surveillance of their homes and followed leads based on the cars that frequented the residences.