1.   An arson task force has chased leads in the case for months, and investigators heard different theories and speculation throughout the day Friday.

2.   A multiagency task force has been chasing leads and staking out building sites for months.

3.   He and half a dozen other detectives sit at computers or phone fellow detectives in U.S. cities when not out chasing leads.

4.   In its investigation, the bureau was chasing leads in Boston, Northern Virginia, South Florida, Detroit, Texas, and Minnesota, among other places.

5.   In the hours after the shooting, police chased numerous leads that proved false.

6.   It gets stranger from there as Eddie and Jack hit the mean streets of working-class, suburban New Jersey to chase down leads.

7.   Justice Department investigators have ferreted through a mountain of documents and chased leads across the United States and Europe.

8.   Police aggressively chased each lead, said Detective Jim McCann.

9.   Sections of Pristina were cordoned off throughout the day as bands of heavily armed marines clomped down streets, chasing leads to other addresses.

10.   Some of the disappointment came from chasing false leads.